Weeds – More Than Just a Garden Eyesore

Weeds – More Than Just a Garden Eyesore

Nobody likes weeds in their garden.  Weeds are not only ugly, they can host insects and diseases that later spread to your garden.  This situation commonly occurs when weeds belong to the same plant family as the desired landscape or vegetable species, but some insects and diseases have diverse palettes.  For example, I recently witnessed a looper caterpillar on a pokeweed plant.

Looper Damage on a Pokeweed

Looper damage on a pokeweed plant. Photo Credit: Matt Lollar, University of Florida/IFAS Extension at Santa Rosa County

Loopers are common pests of vegetable gardens and in the landscape.  Probably the most common loopers found in North Florida gardens are cabbage loopers (Trichoplusia ni) and soybean loopers (Chrysodeixis includens).  Cabbage loopers can be found feeding on cabbage, of course, as well as leafy greens, cucumbers, tomatoes, chrysanthemums, and snapdragons.  Weeds that attract this looper are lambsquarters, dandelions, and curly dock.  Soybean loopers like to feed on sweet potatoes, tomatoes, watermelons, geraniums, and sunflowers.  They can also be found feeding on oxalis, kutzu, and lantana.

Looper insect

Looper found on pokeweed plant. Photo Credit: Matt Lollar, University of Florida/IFAS Extension at Santa Rosa County

Although weeds can be hosts for pests, they may be used advantageously.  Trap crops can be planted at a garden’s perimeter or windward portion to attract pests away from the desired crop.  A trap crop draws the pest crop away from the main crop.  The trap crop is then destroyed or sprayed with insecticide when the pest insect is found feeding on it.  This allows for a reduction or elimination of insecticidal use on the desired crop.  However, it is important that both the trap crop and the desired food crop or ornamental crop are regularly scouted to keep track of pest populations.

For more information on trap crops and other insect and disease diversion methods you can read the EDIS Publication: Intercropping, Crop Diversity and Pest Management.

Weed Control in the Landscape – Alternatives to Glyphosate Workshop – May 23

Weed Control in the Landscape – Alternatives to Glyphosate Workshop – May 23

Are you looking for more selective herbicide options for annual beds and around shrubs and trees? The Santa Rosa County Extension Office will be hosting guest speaker Dr. Chris Marble from the UF/IFAS Mid-Florida Research & Education Center on Thursday, May 23. Dr. Marble is a Nationally Renowned Weed Scientist who has published numerous research and extension publications. 2 CEUs available in LCLM, Limited Lawn & Ornamental, Commercial L&O, O&T, Natural Areas, ROW, and Private Ag.  Pre-registration fee is $15, or $20 registration at the door the day of the event (includes lunch and resources). Pre-register online at Eventbrite Ticket or bring cash, check, or money order to the Santa Rosa County Extension Office, 6263 Dogwood Dr., Milton, FL before May 23. For additional questions, please contact Matt Lollar at mlollar@ufl.edu or 850-623-3868.

SCHEDULE

9:30  Registration & Welcome
9:45  Presentation Begins
11:30  Question & Answer w/Dr. Marble
11:45  Evaluation & CEUs
12:00  Lunch & Discussion on Glyphosate Registration
12:30  Adjourn

Northwest FL Pest Management Conference

Northwest FL Pest Management Conference

The UF/IFAS Extension and FAMU will be bringing the Florida Pest Management Conference to Milton on April 17th.  Attend to earn CEUs for your PCO License.  Attendance is free and we are currently seeking sponsors at $80 per sponsoring business/organization.  For more details and to register, please visit the conference webpage at Northwest Pest Management Conference.

Kiwis – A Golden Opportunity

Kiwis – A Golden Opportunity

Kiwi Vines

Twisted and tangled kiwifruit plants in a North Florida orchard. Photo Credit: Matt Lollar, University of Florida/IFAS Extension – Santa Rosa County

When we think of kiwis, we think of fuzzy, slightly tart, egg-shaped fruits from somewhere in the Southern Hemisphere.  However, there is a species (Actinidia chinensis) of kiwi with smooth skin, sweet taste, and golden color.

Commonly available cultivars of this species are ‘AU Golden Dragon’ and ‘AU Golden Sunshine’.  Most years, kiwis won’t produce much of a crop in North Florida because they won’t receive enough chill hours, but they might be fun to try for the adventurous gardener.

  • Site Selection – Kiwis perform best in well-drained soils with a neutral pH (around 7.0).  High winds may cause canes to break and scar fruit, so a windbreak is recommended or they can be planted near a structure.
  • Irrigation – Kiwis need a lot of water during the summer.  This is partly due the their large leaves that transpire rapidly because of surface area.  Newly planted kiwis should be watered deeply at least once a week.
  • Fertilization – Fertilize kiwis three times a year (January, April, and June).  Do not apply fertilizer after the month of July to reduce the incidence of cold injury in the winter.
  • Insects and Diseases – The most common insects of kiwis are mites and scales.  To reduce the incidence of disease, plant kiwis at least 15 feet apart and train on a trellis.
  • Training – A T-bar trellis, similar to the system used to train grape vines, or a pergola should be used to provide support for the plants.  Once the plants are established (2 to 3 years after planting), about a third of the vines should be removed each year.
T-bar Trellis

An illustration of a T-bar trellis system. University of Georgia Extension

Kiwis are wind- and insect-pollinated.  Good growing conditions and insect pollination help increase fruit size.  Male and female plants are required for good fruit yields.  At least one male (pollen producing) plant should be planted for every four female (fruit producing) plants.

Kiwi plants will soon be planted for evaluation at the West Florida Research and Education Center in Jay, FL.  Please stay tuned for future data!  For more information on growing kiwis in the Southeast, please visit these webpages:

Kiwifruit Production Guide

Bringing Home the Gold – Auburn horticulture alum gets kiwifruit orchard off the ground in Reeltown