Title: Environmental horticulture news
Full Citation
Permanent Link: http://ufdc.ufl.edu/UF00089447/00007
 Material Information
Title: Environmental horticulture news
Series Title: Environmental horticulture news
Physical Description: Serial
Creator: Environmental Horticulture Department, Institute of Food and Agricultural Sciences, University of Florida
Publisher: Environmental Horticulture Department, Institute of Food and Agricultural Sciences, University of Florida
Place of Publication: Gainesville, Fla.
Publication Date: Fall/Winter 2005
 Record Information
Bibliographic ID: UF00089447
Volume ID: VID00007
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.


This item has the following downloads:

fallwinter2005 ( PDF )

Full Text

In This
Chairman's Message ....... 1
Research Highlight ......... 1
Student News ............. 2
Student Design Project 2
ALCA Competition ........ 2
Intern of the Year ........ 2
Scholarships ............ 3
Students win Research
Competition ............... 3
"Colors of Spring" ....... 3
Pacific NW Trip ......... 4
People Focus:
Andrew Macnish ........ 5
Barbra Larson ......... 5
Faculty & Staff News ...... 6
"Arrivals & Departures".. 6
Tissue Culture Workshop 7
Master Gardener Update 7
FYN Program .............. 7
Dr. Bob's Gardening Tips:
Winter Flowering Annuals ... 8
Upcoming Events ......... 8

E nvi r on me n ta l Fall/Winter 2005
Environmental Vol.11 n

Horticulture NEWS

The Bulletin of the Environmental
S Horticulture Department at the University of Florida

7 Chairman's Message Terril A. Nell

Environmental Horticulture Programs
Address Florida's Current and Future Issues

Our rapidly urbanizing state faces many environmental challenges, including
assuring adequate water supplies for human consumption and agriculture,
protection of surface and underground aquifers and preservation of our spe-
cial environment and landscapes. The Environmental Horticulture faculty, staff and graduate
students statewide have joined together to determine the optimum amounts of water and fertil-
izers for residential lawns and landscapes and the fate of fertilizer nutrients once applied to
turfgrass and landscape plants. Faculty at Milton, Gainesville, Plant City, Apopka and Ft. Lauder-
dale launched a five-year program to determine the amounts of water to establish a wide variety
of landscape plants. We are grateful to the Florida Department of Agriculture and Consumer
Services and three water management districts (South Florida, St. Johns and Southwest Florida)
and the Florida Nursery Growers Landscape Association for supporting this project. With the
support of the Florida Department of Environmental Protection, faculty in Milton, Gainesville and
Ft. Lauderdale have begun a five-year project to address a broad range of issues related to man-
agement of turfgrass. The initial study looks at the amounts of water needed to establish and
maintain four of the major turfgrass species. These statewide projects are critical to the future
of Florida -we are approaching these major issues with a systematic and integrated plan that
includes bringing this new information to the residents of Florida through effective extension
programs and joint educational programs with many of the supporting agencies and industry. Of
course, these environmental findings will be included in undergraduate and graduate classes so
our graduates are prepared to address the problems of the future with the very best scientific
information. In this way, our faculty provides the vision and scientific facts for the future, thus
assuring that lawns and landscapes are recognized as part of the solution to protecting the envi-
ronment and preserving our natural resources, and University of Florida alumni are prepared to
guide future turfgrass and landscape development. 1 -

ENH Research Highlight: Keeping it clean
for long-lasting flowers
Andrew J. Macnish, Ria T. Leonard and Terril A. Nell
American consumers value flower quality very highly when
purchasing fresh cut flowers. The challenge for the floral
industry is to consistently deliver high quality and long-
lasting flowers.
Harvesting and shipping operations place tremendous
stress on flowers. To remain alive and functional, harvested
flowers need intensive care. Growers, wholesalers, retailers
and consumers all play a vital role in administering flower
life-support. Keeping flowers cool and hydrated is critical
for extending display life. However, maintaining flowers in a
clean environment is equally important.
Just like in a hospital emergency room, ensuring that all
instruments are sterile is essential for preventing bacterial
infection and death.
Poor sanitation is widely accepted as a major factor in the
transmission of bacterial disease. Bacteria lurk on the surfaces
cont. page 7

Cut Gerbera jamesonii *Monarch' flowers
after ten days in deionized water
containing either 0 (left) or 10 (right)
ppm chlorine dioxide.



C M. I

This past spring the students of the
Environmental Horticulture department
designed and installed a landscape
project for the Presidents residence on
campus. As a part of National Agriculture
week the students were involved in and
lead a service learning project with the
College of Agricultural and Life Sciences.
The planning process began in late 2004
when the undergraduate club was ap-
proached by Mrs. Machen to help clean
up the conservation area behind the
president's residence which had exten-
sive damage due to the two hurricanes
that passed through Gainesville in 2004.
The job was a little overwhelming but
with other departments in CALS assisting
a good amount of progress was seen. The
main focus of our students was to design
a natural landscape around the Gazebo
which is a focal point in the back yard.
Graduate student Erin Alvarez created a
design to fit the surrounding space and
compliment the gazebo. On Sunday
March 20th ENH students supervised 35
student volunteers from CALS in planting
the area. They also renovated the land-
scape surrounding the outside patio and

University of Florida Student
Named Intern of the Year
Laura Alexander

BBQ area near a small creek that runs
through the property. It was a great
learning opportunity for our students who
were able to see a landscape develop
from the planning stages to the final
installation. They were also able to
practice their supervisory and teaching
skills by working with students from other

David Sandrock

Nine of our best students
St attended the 29th annual
S(ALCA (Association of Land-
cVr ID Jr scape Contractors of Ameri-
rotfe ca, now PLANET) Student
Sn I a V 1a 04 a Career Days (March 18-22)
Sat the University of Mary-
land. David Sandrock and
graduate student Erin Alva-
rez were advisors for the
event. There were 781
students representing 54
schools participating. UF
students attended work-
shops, competed in land-
scape events (23 different events) and participated in the career fair (84 firms repre-
sented at the career fair). Student Career Days is a great opportunity for students to
interview with potential employers as well as meet students from other colleges and
universities. Students attending and the events they competed in were: Lauren Schul-
man (Interior and exterior landscape design, Interior plant ID), Alina Lovelace (Wood
construction, Interior plant ID), Jason Lee (Compact utility loader operation, Safety
management), John Burns (Wood construction, Irrigation assembly, Plant installation),
Justin Sklaroff (Arboriculture techniques, Safety management), David Barnard (Arbori-
culture techniques), Neil Greishaw (Irrigation assembly, Annual and perennial ID), Sam
Sampson (Paver installation, Plant installation) and Jared Berryman (Paver installa-
tion, Plant installation). The team learned a lot about Student Career Days and is
already preparing for next year's event at Brigham Young University, March 23-26, in
Provo, Utah. For more information about Student Career Days go to:
www. studentcareerdays.org
Or, you may contact Dr. David Sandrock at dsandrock@ifas.ufl.edu.

Page 2

Jessica Boldt, a senior in the Environ-
mental Horticulture program, has been
named the 2004 GPN/Nexus Intern of the
Year for her work at White's Nursery and
Greenhouses last summer. Boldt's love of
horticulture began at an early age as she
helped out in her parent's small nursery,
South Brevard Nursery in Melbourne, Fla.
When the time came for Boldt to
complete an internship, she and her
advisor, Dr. James Barrett, decided it
would be best to get some experience at
a large-scale operation. Boldt, a recipi-
ent of the Vic and Margaret Ball Intern-
ship Scholarship was soon on her way to a
six-month internship at White's Nursery
and Greenhouses in Chesapeake, Virginia.
It didn't take long for Boldt's dedica-
tion and skill to impress her supervisors.
Among her many experiences at the
nursery, Boldt was put in charge of her
own work crew.
"Being in charge of a work crew was a
very challenging, but rewarding, experi-
ence," Boldt said. "I was given the re-
sponsibility to complete a task and given
guidelines on what to accomplish, but I
had to figure out how to get it done."
Although it wasn't always easy, Boldt said
that working her way through difficult
situations was one of the most valuable
experiences of her internship.
"I had to decide whether to say the
tasks I was given were too hard or to give
it my all and learn from my mistakes,"
Boldt said. "I decided to take on the
challenges, and I am amazed at how
much I learned and how well everything
turned out."
Boldt will complete her undergradu-
ate degree this December. She plans to
continue her education at UF by working
towards a M.S. in Horticulture.


Students Design Project for President's Home

UF Students Compete at ALCA

Gator Grad Grabs Prestigious Award

Laura Alexander

Recent Environmental Horti-
culture graduate Grace Chapman
has been named the Martin
McLaren 2005-2006 scholar. The
McLaren scholarship, which is
sponsored by the Garden Clubs of
America, allows one American
student each year to complete a
work-study program in Great Brit-
ain. Over the course of a year,
Chapman will participate in

study, research, and work
projects at gardens in Scotland,
England and Wales, including the
Royal Botanic Gardens at Kew and
Edinburgh. "I'll spend my time
studying the plant conservation
techniques that are used in bo-
tanic gardens in the UK," said
Chapman. These methods include
propagation, tissue culture, seed
collection, and seed banking.

Chapman will depart for the UK
in September, but until then she
is in Kennett Square, PA partici-
pating in an internship at Long-
wood Gardens. "I'm thrilled that
I'll be around some of the great-
est horticultural minds in the
world," said Chapman. "I plan to
learn as much as I can from these
talented people."

"Colors of Spring"

On April 2nd and 3rd the gradu-
ate and undergraduate student
clubs worked together to put on
the first annual Colors of Spring
festival. This included a themed
garden display with a water fea-
ture built by the students, a
speakers program and a plant sale.
The planning for this event started
early in January, with students
working on marketing and design
strategies and beginning crop
production. This year, the clubs
propagated and grew out plant
materials for their sale in conjunc-
tion with requesting donations
from nurseries around the state of
Florida. The entire event was a
huge success. It was well attend-
ed by the general public who were
able to get gardening tips from
horticulture professionals and
students, as well as purchase
beautiful landscape plants. Plans
have already begun for next year's
event, which will be even bigger
and better. For more information
see the student clubs' websites:


Yvonne Arwood, design team
leader for the student club plant sale.

ENH Scholarship Corner

Scholarships awarded between
July 1, 2004 and June 2005
American Orchid Soc. 3,000
Agriculture Women's Club 500
AABGA Student Travel Grant 450
Arboriculture & Res & Ed Acad. 500
Arthur Andres Memorial Fund 5,000
ASHS 1,500
Bartlett Tree 3,000
Batson 14,000
Bayer Scholarship 1,000
Bloom 'N Grow Garden Soc. 2,000
Bobby F. McKown 1,000
Brannan Family 2,000
Charles Shinn Jr. Memorial 3,000
Charles M. Palmer & Thelma Mered 6,000
Davey Tree Expert 1,000
Fla. Federation of Garden Clubs 6,250
FL Turfgrass 1,000
FL Rural Rehabilitation Corp. 4,000
FNGLA* 19,500

Edgar A. Martin
IFAS Travel Grant
IPPS Travel Grant
James H.Davis Memorial
- Palm Beach/Martin County
James H.Davis/National Foliage Fdn.
Lisa Burton Memorial
Lawn & Garden Marketing
Max J. McQuade Memorial
Men's Garden Club of Jacksonville
IPPS Oral Competition
Orlando Garden Club
Seymour Goldweber School
Plant City Chamber of Commerce
Joseph Shinoda Memorial
Sidney B. Meadows
Sweetwater Oaks
Windermere Garden
William F. Ward Memorial



Two University of Florida-Milton students brought home second and third
place awards from the Bryson L. James Student Research Competition recently
held at the 50th Annual Southern Nursery Association Research Conference in
Atlanta. The annual contest evaluates students on written and oral
presentations pertaining to their original research projects. Entries must be
unique and significant to the nursery industry.
Ranking second place among undergraduates, Lindsay Mullinax was awarded
$300 for her research presentation on plant growth regulators. Third place
winner Kim Strickland was awarded $200 for
her presentation on nutrient deficiencies of
Dwarf Creeping Chenille.
Both students are studying for their

undergraduate degrees in Landscape and
Nursery Horticulture at our Milton, FL campus
and work in the horticulture field. Mullinax is
employed by The Home Depot as a plant
specialist and Strickland works for Plant
Development Services, Inc., in Loxley, AL.
"This is really something to be proud of,"
said James Gibson, assistant professor of
Environmental Horticulture at UF -Milton, who
supervised the research. "They made a
tremendous sacrifice balancing classes and
work to do the research and they managed
their time well. With this research they are
helping to solve problems within the industry."

Lindsay Mullinax (left) and Kim
Strickland (right) won recognition
in the Bryson James Research

Page 3

,-^ T

2005 Student Trip Destination:

The Pacific Northwest

Oregon, Washington State and Vancouver, British Columbia were the
destination for the 2005 Environmental Horticulture nursery and garden
tour. Four faculty and two staff members, 1 post doc, 6 graduate
students, and 16 undergraduates from the Apopka, Gainesville, Milton and
Plant City campuses visited 6 nursery operations, 5 gardens, 1 retail
garden center, an agricultural research center and a rain forest.
Some of the highlights of the trip included a visit to the 1000 acre site
of Monrovia Nursery in Dayton, Oregon. We were given an extensive tour
of their production and shipping areas and were able to see first hand
their patented pruning machine in use. Production included perennials,
broadleaf plants, conifers, and perennial trees. Monrovia also has a
beautiful display garden that we enjoyed strolling through and
experiencing the great plant palette of the northwest. Other nurseries
visited were Blooming Nursery specializing in perennial production,
Clackamas a family operated business growing bedding and potted plants,
perennials, and hanging baskets, Washington Bulb specializing in cut
flowers and bulb plants such as tulips, iris, and daffodils and Molbaks a
wholesale and retail family owned facility. After visiting Molbaks
wholesale site we were given an extensive tour of their retail store and
learned about their history and business philosophy. The retail garden
center was unlike any seen before and included an extensive array of
plant materials, containers, patio furniture, home goods, water features,
statuary, and a restaurant with seating around a beautiful fountain and
indoor garden. A buyer could spend an entire day browsing through the
15 acre site which has evolved into a tourist destination, attracting over
one million visitors each year.
There was a common theme at all of the nurseries we visited where
we saw water conservation (all had water retention sites), energy
conservation, and most had some type of display or trial garden at their
location. We were not disappointed when we visited Heronswood Nursery
owned by plantsman Dan Hinkley. Heronswood proved to be a
horticulturists dream. We were overwhelmed as we walked from
greenhouse to greenhouse observing plant specimens never before seen
by our eyes. An additional treat was to walk through the display gardens
on the Heronswood properties and see some of the same materials
growing in the landscape.
We also visited the Mid-Columbia OSU Extension Center where we
observed fruit production of apples, pears, and cherries and were later
taken to visit with a local 3rd generation farmer specializing in pears and
Along the way we visited many different botanic gardens. Washington
Park which featured a rose garden, Japanese garden, and arboretum,
Bellevue Botanical Gardens comprised of 36 acres of display gardens,
woodlands, meadows and wetlands, The Rhododendron Species Garden,
the Horticulture Centre of the Pacific and Butchart Gardens. Each
Garden had something unique and special to offer but Butchart took our
breath away! The garden provided sensory overload with amazing color
schemes, plant textures, and scents. Tulips and spring bulbs were in
bloom and we saw a lot of "wow"!
A special treat was to visit the Vancouver Island Rainforest with a
knowledgeable guide who was native to the area. As she walked us
through the forest she pointed out many plants that were edible or had
medicinal properties. Our walk through the forest took us out to the
cliffs overlooking a bay. We were amazed at the view and as we ventured
closer to the waters edge we noticed large numbers of purple starfish and
other sea creatures.
This year's destination proved to be an enjoyable and educational trip
for all as we experienced the local cultures, sights and best of all
horticultural offerings of the region.

Students at Butchart Gardens in Victoria, B.C., Canada

Alina Lovelace and Jeffrey Andersen at Clackamas
Greenhouses in Aurora, Oregon.

The display garden at Monrovia Nursery in Dayton, Oregon.

Richard Roozen, an owner of Washington Bulb Company in
the Skagit Valley, giving a tour to our students.

Page 4



Postdoctoral Associate

Dr Andrew Macnish joined the
Environmental Horticulture De-
partment at the Gainesville Cam-
pus in October 2004. Andrew is a
Postdoctoral Associate working
under Department Chair, Dr Terril
Nell, in the floriculture posthar-
vest group.
Andrew, a native from "Down
Under," received his Ph.D. in Hor-
ticultural Science from The Uni-
versity of Queensland in Australia.
His doctoral research investigated
the physiology and anatomy of
postharvest flower drop from
Geraldton waxflower, an Austra-
lian wildflower. Andrew subse-
quently completed a postdoctoral
fellowship at Cranfield University
and Rothamsted Research in the
United Kingdom. There, his re-
search was directed at identifying
the chemical nature and activity
of compounds in plants with po-
tential for use as biocides.
Andrew's research at Gaines-
ville is focusing on understanding
and improving water uptake pro-
cesses by fresh cut flowers. Many
of the cut flowers purchased in

FYN Statewide Coordinator

Barbra Larson joined the de-
partment in June 2004 as the state
coordinator for the Florida Yards
and Neighborhoods program. She
was previously working in the
Entomology and Nematology De-
partment, most recently with the
IPM Florida program and earlier on
a research and extension program
in biological control of a weevil
pest of native Florida bromeliads.

the USA have been exported dry
over long distances from farms in
Central America. Their ability to
re-hydrate often governs the dura-
tion of vase life in the home. An-
drew's work will identify key steps
that currently limit the longevity
of these flowers. In partnership
with industry, he will develop and
test protocols with potential to
improve hydration and thereby
lead to long-tasting fresh cut flow-
ers for consumers.
When not working in the lab,
Andrew hopes to travel around
and take in as much of Florida and
the USA as possible. Discovering
the local flora and fauna is a par-
ticular interest. He is also keen to
Learn the ins and outs of American
sports football, baseball, basket-
ball, hockey, rodeo and even mud-

Page 5

After growing up in New Jersey,
she went to Massachusetts for her
undergraduate studies, completing
a double major in biology and an
interdisciplinary program in inter-
national development at Amherst
College. After working in the
Peace Corps for two years deliver-
ing environmental education pro-
grams to teachers and the public
in Guatemala, she began a mas-
ter's program in entomology at
Rutgers University, focusing on
Integrated Pest Management and
biological control. She taught
biology at the Universidad del
Valle in Guatemala City for one
year and then came to Florida to
complete a Ph.D. program in ento-
mology, where her research fo-
cused on pest and beneficial popu-
lations in small-scale tropical
intercropping systems. After grad-
uating, she wrote crop profiles for
the Pesticide Information Office
before returning to the Entomolo-
gy Department for her post-doc-
toral work with the bromeliad
Since starting with FYN, Barbra
has spent much of her time man-
aging the grants from FDEP that
the program receives, getting to
know the county FYN coordinators
and their programs, and strength-
ening partnerships with other
organizations working in water
quality, resource conservation and
urban horticulture. She is grateful
for the teamwork and dedication
of the entire FYN group (Patty
Connolly, Gale Robinson and Holly
Shiralipour in the state FYN office
and all of the county FYN coordi-
nators), whose efforts are helping
more Floridians every day to make
their landscaping more sustain-
able. Future plans for FYN include
securing additional funding mech-
anisms for the state office and
additional county programs, ex-
panding the state website to pro-
vide more information to county
FYN coordinators and the various
audiences of FYN, and adapting
materials to specific audiences.
When not working with FYN, Bar-
bra spends time with her two
children (2nd and 6th grade boys)
and their new dog.


Scott Stewart and Dr. Mike Kane
were awarded research grants from the
San Diego County Orchid Society and
Florida Department of Forestry to con-
duct ecological, conservation, pollina-
tion biology and propagation research on
the imperiled Florida Orchidaceae: Habe-
naria distans, H. macroceratitis, and
Spiranthes floridana. A cooperative
agreement with U.S. Fish & Wildlife Ser-
vice has also been established to fund
various aspects of the program's Florida
native orchid research.
Dr. Mike Kane presented three invited
talks since spring 2005:
"Bridging the Gap between Horticulture
and Ecology: Applications of In Vitro
Native Plant Propagation for Coastal Dune
Stabilization" Florida Native Plant Soci-
ety, Vero Beach, April 21.
"Publishing Realistic Micropropagation
Protocols" The Society for In Vitro Biol-
ogy 2005 annual meeting in Baltimore,
Maryland, June 3-8.
"Current Status and Impact of Commer-
cial Plant Tissue Culture" ASHS Work-
shop: Tissue Culture and Its Increasing In
The Nursery Industry Las Vegas, Nevada,
July 21.

Dr. Terril A. Nell, Professor and Chair-
man of Environmental Horticulture, was
honored at the Florida State Florists'
Association annual convention in Orlan-
do in early June with the presentation
of the "Place in the Sun" Hall of Fame
Award, which is presented to two indi-
viduals each year, a Florida State and a
National recipient. The "Place in the
Sun" award was created in 1978 as a
permanent means for the Florida floral
industry to recognize its leaders and to
encourage high standards of service and
professional responsibility.

Phil Kauth presented a component of
his Master's research with Florida native
terrestrial orchids in a talk entitled "In
Vitro Germination and Seedling Develop-
ment of Calopogon tuberosus" at the
Society for In Vitro Biology 2005 annual
meeting Baltimore, Maryland, June 3 -8.
Phil was co-mentored by Dr. Mike Kane
and Dr. Wagner Vendrame, who is located
at the Tropical Research t Education
Center, Homestead, FL.
Scott Stewart presented a component
of his dissertation
research with
Florida native
terrestrial orchids
in a talk entitled
"In Vitro Seed
Germination and
Seedling Develop-
ment of Habenar-
ia macroceratitis,
an Endangered
Terrestrial Or-
chid" at the 2005
Society for In
Vitro Biology
annual meeting
held in Baltimore, The subject of Scott Stew-
art's presentation was
Maryland, June Habenaria macroceratitis, a
3rd 8th. native Florida orchid.

Tom Butler (right), chairman of Teleflora,
presenting Terril and Cathy Nell, with the Florida
State Florists' Association's 2005 "A Place in the
Sun" Hall of Fame Award.

Notes from the Plant Restoration,
Conservation, Propagation Biotechnology Program

Page 6




Dr. Carrie Reinhardt Adams is our new
Assistant Professor of Landscape Ecology.
Her Ph.D. in Horticulture Science/Water
Resources Science is from the Univ. Minne-
sota. Carrie will be working in landscape
and restoration ecology.
Dr. Rick Schoellhorn, professor of flori-
culture, has taken a position with Proven
Winners, a worldwide plant marketing
Judy Wilson, a secretary in ENH since
1985, served as liaison to our students,
assisting them in acquiring scholarships,
internships and grants, among other core
functions. Judy retired from Environmen-
tal Horticulture this past December. Her
successor is Marcie Siegler, recently relo-
cated from Lewisburg, Pennsylvania,
where she worked for 28 years at Bucknell
University. She can be reached at (352)
392-1831 x 204 or e-mailed at:
Dr. David Sandrock has accepted an assis-
tant professor's position at Oregon State
University, and will be relocating at the
end of the year.
Dr. Dennis B. McConnell, a member of
Environmental Horticulture for more than
30 years, retired in July. He has been in
Gainesville since March 1973, when he left
his position as a foliage extension special-
ist at Apopka to come to Gainesville as a
research and teaching professor. Over the
years Dr. McConnell taught several courses
at UF including "Interior Landscape Prac-
tices," "Exotic Plant Identification,"
"Foliage Plant Production" and the more
recent and popular "Plants, Gardens and
You." His research emphasized anatomical
and developmental changes in plant
leaves in response to environmental fac-
tors, and more recently, biomineralization
in plants. Dr. McConnell's doctorate is
from the University of Wisconsin, Madison.
Jan Weinbrecht, who managed the Turf-
grass Envirotron since its inception, has
taken a position in the Agronomy Dept.
and will be working at their facility at
Pine Acres. His former position was filled
by Jason Haugh, our Farm Manager. We
wish to welcome Joe Vasquez as our new
Farm Manager.

UF-Apopka researcher Richard Beeson receives Porter Henegar Award
for Horticultural Research.

"In 1969, an Award of Merit was created to honor those individuals who had made
outstanding contributions to ornamental horticultural research and, more specifi-
cally, to SNA. The recipient is selected annually by fellow research workers for his/
her concern and work toward improving the nursery industry." -SNA

Terril Nell Awarded by FSFA

Teachers' Plant Tissue Culture Workshop A Great Success!

For the third year Dr. Mike Kane taught the four-day workshop Introducing Plant
Tissue Culture into the Classroom. The workshop was held from July 25 -28th in
Gainesville. Through a series of lectures and intensive laboratories experiences, 16
faculty from high schools, community colleges and universities from around the
United States learned important strategies for incorporating plant tissue culture into
their curricula. "This workshop would not have been possible without the generous
financial support from several Florida commercial tissue culture labs, including
AgriStarts I t II and Oglesby Plants International, and donation of various teaching kits
from Carolina Biological Supply Company," says Kane.

ENH Research Highlight (continued from front pg.)

of buckets, vases, cutters, benches and flower stems. They can easily build up in
hydration and vase solutions without even being visible. This bacterial 'soup' enters
and plugs stem ends, thereby reducing water supply to flower blooms and
accelerating wilting. Bacterial contamination of flower stems can be prevented by
maintaining good hygiene -for example, cleaning of buckets, vases and cutters with
commercial antibacterial and sterilizing agents.
The floriculture postharvest program at the University of Florida is currently
developing and evaluating "Best Practices" for growers, wholesalers, retailers and
consumers that assure maximum flower quality and longevity. A major part of our
research is directed at improving sanitation during postharvest handling.
Recently, we tested the potential of a novel and stable form of chlorine dioxide to
extend the longevity of cut Gerbera jamesonii 'Monarch' flowers. Including just ten
parts per million of chlorine dioxide in vase water increased vase life of Gerbera
flowers from ten days (i.e. deionized water control) to 14 days. The chlorine dioxide
treatment delayed the build-up of stem-plugging bacteria in vase solutions.
These results highlight the great potential for chlorine dioxide to extend the
postharvest longevity of cut flowers such as Gerbera that have a reputation for
contaminating vase water. Further tests examining the use of chlorine dioxide at
different steps along the distribution chain are being conducted in our laboratory.
Our work also shows that applied research can make a real difference and equip
industry with the tools to consistently provide fresh, long-lasting flowers to

Master Gardener
Information and Update
Tom Wichman
The Florida Master Gardener Program,
since its inception in 1979 has grown and
thrived throughout the state. This volun-
teer program, for people interested in
gardening and horticulture, is active in 56
of Florida's 67 counties. It provides
gardeners with intensive education in
home horticultural principles. Partici-
pants who complete the program are
certified as master gardeners by the
Florida Extension Service.
Following the training, Master Gar-
deners are required to donate 50-100
hours of volunteer time within a one-year
period. This service include answering
gardening questions, conducting plant
clinics, beautifying the community, and
other horticultural activities.
The program now has over 3,700
volunteers who in 2004 alone donated
over 340,000 hours to the citizens of
Florida, valued at almost $6 million,
helping almost 622,000 individuals. We
continue to increase the number of vol-
unteers, hope to add the remaining Flori-
da's counties, and wish to utilize the
latest technologies to train and educate
our volunteers.
Each year, we hold a continued train-
ing conference for the master gardeners
in either Gainesville or various locations
throughout the state. Beginning in 2006
a midyear update for our volunteers will
utilize the PolyCom distance education
system located around the state. These
learning opportunities, along with region-
al training, keep our volunteers up-to-
date and make them some of the best
educated master gardener volunteers in
the country.
If you are interested in becoming a
Master Gardener, contact your local coun-
ty extension office or visit:

Florida Yards and Neighborhoods Program Barbra Larson
For over 10 years, the Florida Yards & Neighborhoods (FYN) program has been teaching Floridians about environmentally sus-
tainable landscaping practices. FYN is now active in 43 counties, with the newest program starting up this year in the Okeechobee
region. Twenty-one counties use Master Gardeners as Florida Yard Advisors, assisting with educational programs, FYN demonstra-
tion gardens, and home visits to recognize Florida-friendly landscaping. From 2000 to mid-2005, more than 2,000 Florida Yards
were recognized in 25 counties.
FYN programming is increasingly targeted to professionals with a role in design, installation and maintenance of landscapes in
addition to its initial focus on homeowners. Incorporating the principles of FYN from the planning stage of new development en-
courages greater adoption of sustainable landscaping practices in Florida, one of the fastest growing states. FYN now has a Builder
and Developer State Coordinator, who provides materials and resources to county FYN programs involved in advising and recogniz-
ing Florida-friendly landscaping for new construction.
Over the last decade, water quality funding from EPA, through FDEP, has provided seed money to hire FYN coordinators in
many counties. 22 county extension offices now have FYN positions that are funded beyond FDEP and UF/IFAS Extension funds,
with water management districts, utilities and local governments playing a key role. Strong support from both Horticulture Exten-
sion Agents and Master Gardeners has also helped the program to reach large numbers of homeowners and professionals. One of
FYN's major strengths is its collaboration with diverse organizations sharing similar educational goals: the Southwest FL Water
Mgmt. District is adopting FYN materials and supporting new materials development for a unified message, and the FDEP Springs
Initiative is supporting a new consumer-oriented website on Florida-friendly landscaping in collaboration with FYN.
Page 7

un me weD uo:
Click on "Home Gardening"

Dr. Robert Black, Professor Emeritus

Flowering Annuals

It's time to get out of the summer
doldrums and start thinking about gar-
dening. Get set to go! It's about time to
plant winter flowering annuals.
Many of the annual flowers which
thrive in northern gardens can be suc-
cessfully grown in Florida. However, the
season at which they are grown is quite
different. Most annuals are classified into
two groups cool season and warm sea-
son annuals. Florida's cool season is from
October to April, thus we grow many
annuals during the winter which would
normally be planted in the spring in
northern states. As long as the proper
planting time is considered, home gar-
deners can produce many colorful annu-
als all winter long. Remember, however,
the cool season annuals you plant in the
fall must be able to endure frost if they
are planted outdoors. Annuals which can
be planted in September to October
include sweet alyssum, browallia, calen-
dula, candytuft, gaillardia, gypsophila,
nasturtium, pansy, petunia, snapdragon,
phlox, sweet-pea, ornamental cabbage
and viola.
Annuals have numerous uses in the
garden. They are probably best displayed
in front of shrubbery borders. By choosing
annuals of different heights, deep flower
borders can be produced. Plant the taller
species at the rear and progressively
shorter varieties in front. Use colors
which blend well and avoid too many

varieties having different colors. Beds
should be large enough so that flowers
can be cut and used to provide winter
color indoors. Many low growing annuals
make effective edgings for walks and
drives and don't forget to use annuals for
window boxes and porch gardening.
Annuals can be planted as seeds or
obtained as bedding plants which can be
transplanted into the garden. Bedding
plants are usually available at reasonable
prices and offer flowers quicker than
growing your own plants from seed.
When buying seeds, you get what you
pay for. Seeds of named varieties of a
specified color are more expensive than
color mixtures. The latter should not be
expected to produce flowers of as high a
quality as the more expensive seeds. If
possible, plant seeds after the rainy
season ends because small seeds may be
easily washed away. The other alterna-
tive is to start plants in flats so they can
be moved to shelter during rain storms.
Some annuals such as nasturtiums and
sweet peas, however, should be planted
directly where they are to grow because
they are difficult to transplant success-

Keep a careful watch on young annu-
als. Their roots are shallow so watering is
necessary until they are well established.
Pests must also be kept under control.
To produce compact, bushy plants,
pinch off the top pair of leaves after
seedlings have at least three pairs of
leaves. This will produce lateral branches
and better quality plants.
Most seed packages contain directions
for planting and care of annuals, but
experience is the best teacher. The gar-
dener who learns how to successfully
grow annuals will produce magnificent
color in his winter garden. So color it
with flowers, Florida!

- 1.4

Pot Marigold, Calendula officinale

Pansy, Viola X wittrockiana

Snapdragon, Antirrhinum majus

6 0 0 ii -~i

Petunia, Petunia hybrida

UF Environmental Horticulture
Gainesville, FL
December 6&8, 2005
contact: Carolyn Bartuska (cbartuska@lfas.ufl.edu)

UF Environmental Horticulture Dep't.
Gainesville, FL
December 1-2, 2005

Broward County Convention Center
Ft. Lauderdale, FL
Come see us!
January 19-21, 2006

Page 8

University of Florida Home Page
© 2004 - 2010 University of Florida George A. Smathers Libraries.
All rights reserved.

Acceptable Use, Copyright, and Disclaimer Statement
Last updated October 10, 2010 - - mvs