by John Wells | Jul 1, 2011
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Carrie T. Stevenson
Coastal Sustainability Agent
Escambia County Extension
ctsteven@ufl.edu
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One of the first instincts of many homeowners when they see a big storm in the Gulf is to start trimming limbs and removing trees. The recent tornado devastation throughout the Southeast and Midwest has also caused many people concern about having a mature tree in their yard. While it is true that falling trees and limbs can cause significant damage to a home and property, it is wise to fully evaluate one’s landscape before making an irreversible decision. Trees are crucial for providing shade (i.e. energy savings), wildlife habitat, stormwater management, and maintaining property values.
Downed trees in a row along a hurricane-devastated street. Photo Credits: Mary Duryea, University of Florida
University of Florida researchers Mary Duryea and Eliana Kampf have done extensive studies on the effects of wind on trees and landscapes, and several important lessons stand out. Thanks also to Pam Brown, former Horticulture Agent from Pinellas County, for compiling many of these tips. Keep in mind that reducing storm damage often starts at the landscape design/planning stage!
- Select the right plant for the right place.
- Plant high-quality trees with central leaders and good structure. Branch attachment angles can affect weather a large branch will split from a tree. Wide-angle attachments are much more stable than narrow.
- Trees that have had regular structural preventive pruning are less likely to fail than neglected trees.
- Monitor pines carefully. Sometimes there is hidden damage and the tree declines over time. Look for signs of stress or poor health. Check closely for insects. Weakened pines may be more susceptible to beetles and diseases. Longleaf pine often survived storms in our area better than other species.
- Trees with decayed trunks are very dangerous in winds. Disease causing decay can come up from the roots or enter through improper pruning cuts. Remove hazard trees before the wind does. Have a certified arborist inspect your trees for signs of disease and decay. They are trained to advise you on tree health. To find a Certified Arborist go to: http://www.treesaregood.com/findtreeservices/FindTreeCareService.aspx
- Trees in a group (at least five) blow down less frequently than single trees.
- Trees should always be given ample room for roots to grow. Roots absorb nutrients, but they are also the anchors for the tree. If large trees are planted where there is limited or restricted area for roots to grow out in all directions, there is a likelihood that the tree may fall during high winds.
- Construction activities within about 20 feet from the trunk of existing trees can cause the tree to blow over more than a decade later.
- Plant a variety of species, ages and layers of trees and shrubs to maintain diversity in your community
- Post-hurricane studies in north Florida show that live oak, southern magnolia, sabal palms, and bald cypress stand up well compared to other trees during hurricanes. Pecan, water and laurel oaks, Carolina cherry laurel and sand pine were among the least wind resistant. For a full list of trees and their hurricane endurance, please visit http://edis.ifas.ufl.edu/pdffiles/FR/FR17300.pdf
- When a tree fails, plant a new one in its place.
by John Wells | Jul 1, 2011
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Eddie Powell
Horticulture Agent
Walton County Extension
pep5@ufl.edu
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The key to eating home grown delicious vegetables, is selecting the correct time to harvest. Below are some of the easiest ways to identify the correct time to pick your most common summer veggies.
A Locally Gardener Harvesting Vegetables at Dragonfly Field Farms in DeFuniak Springs, Florida. Photo Credits: Kendra Zamojski
Snap Beans: Pick them before you can see the seeds bulging. They should snap easily into two. Check daily. It doesn’t take long for beans to go from tender to tough.
Corn: Usually 3 weeks after the silks form, they will turn dry and brown. The kernels should exude a milky substance when pricked.
Cucumber: Cucumbers race to the harvest with zucchini. Check daily and harvest young. Timing and length will vary with variety. The fruits should be firm and smooth. Overripe cucumbers can be very bitter or pithy, even before they start to turn yellow.
Eggplant: Slightly immature fruits taste best. The fruits should be firm and shiny. Cut rather than pull from the plant.
Muskmelon (cantaloupes): The general rule of thumb is that the color should change to beige and the fruit will ‘slip’ from the vine when lifted. You should also be able to notice a sweet smell when ripe.
Peas: The pea pods should look and feel full. Peas are sweeter if harvested before fully plumped. Peas really need to be tasted to determine if they are sweet enough.
Pumpkins: Once the pumpkins have turned the expected color and the vines are starting to decline, check to make sure the skin has hardened enough that poking it with your fingernail will not crack it. You don’t want to pick your pumpkin too soon, because it will stop turning orange once its cut, but don’t leave them out if a hard frost is expected.
Squash: Pick young and check often. The skins should be tender enough to poke your fingernail through.
Tomatoes: Harvest tomatoes when they are fully colored and slightly soft to the touch. Gently twist and pull from the vine.
Watermelon: The white spot on the bottom of the melon should change to a deep yellow when ripe. Some people can hear a change in the sound made when the melon is thumped with the finger. It should make a hollow sound when ripe, but this is a skill that must be developed.
So enjoy and share your gardener’s bounty, happy harvesting.
by John Wells | Jul 1, 2011
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Alex Bolques
Editor, Horticulture Agent
Gadsden County Extension
ABOL@UFL.EDU
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As we enter the second half of the year, July is typically hot and humid. You may also expect frequent afternoon thunderstorms, as we have also entered into Florida’s rainy season. Remember to stay hydrated while working in the garden and protect yourself from harmful ultraviolet radiation (sunlight).
Last month, the US Food and Drug Administration (FDA) issued new rules on rating sunscreens. While these will not take effect for another year, (two years for small sunscreen manufacturers), the rule helps to clear up confusion about which product to use. According to FDA, a broad spectrum SPF 15 product, if used as directed with other sun protection measures (see product label), reduces the risk of skin cancer and early skin aging, as well as helps prevent sunburn. As a general rule, sunscreen should be applied twenty minutes before going outside and reapplied every two hours or after swimming or sweating.
In this issue, you will learn about some of the easiest ways to identify the correct time to harvest your summer vegetables, tips on how to manage trees in the landscape to reduce windstorm or hurricane damage, lawn care considerations, cicada killers, Ganoderma butt rot on palms, and use of buttonbush in the landscape.
