by Beth Bolles | Apr 29, 2020
Escambia County Master Gardener Volunteer Carol Perryman shares information to help choose and grow lavender in the herb garden.
If you want to grow lavender in our hot & humid climate you must follow a few considerations which can be “do or die” rules. Will your lavender be an annual or a perennial? Hybridizers are always busy at work but, in the meantime:
Choose the right variety. (English lavender cannot easily be grown in our climate.)
1.Spanish Lavender- Lavandula stoechas- 18 to 24” tall, lighter scent, early bloomer & long blooming, drought & heat tolerant, good for mild winters, gray/green foliage, magenta-pink flowers with purple bract shaped like a pineapple with bunny ears.
2.’Goodwin Greek Gray’ Lavandula dentata x L. lanata – 2 to 3 feet tall & wide, silvery/gray toothed edged leaves, short spikes of deep purple to blue blooms, heat & humidity tolerant, good to 15 degrees F in winter,
3.French Lavender- Lavandula dentata -3 feet tall, lighter scent, summer bloomer & long blooming, heat tolerant (Protect from frost.), narrow gray & green leaf varieties, “dented” lavender colored flower buds that make up flower head/bract.
4. Sweet Lavender- Lavandula heterophylla – Tolerant of heat & humidity & cold tolerant to 15 degrees F. 1 1/2 to 2 feet tall, gray/green leaves &bright lavender flowers. Allow to dry between watering.
5. ‘Phenomenal’ Lavandula x intermedia – This is a newer evergreen hybrid developed for extreme heat or cold. It is disease resistant, tolerates our humidity, 24” x 32” high & wide with blue to purple blooms and gray/green leaves.
Lavender in the Escambia County Extension herb garden. Photo by Beth Bolles, UF IFAS Extension Escambia County.
Choose your site well or consider growing in pots.
1. LIGHT – Full sun.
2. DRAINAGE – Focus on drainage. MUST be well-draining site or pot or modified to be so.
3. SOIL – Loose almost neutral soil.
4. AIRFLOW – Focus on air circulation which will help dry off the leaves after rain. Space appropriately.
5. WATER – Focus on water source. Lavender does not like to be watered overhead. A dripline
is best or water by hand around roots, not on leaves. Check water requirements for your chosen variety.
6. MULCH- Whether in the ground or in pots, use light-colored gravel or small rocks as mulch
to help reflect sunlight & heat to help keep foliage dry. Heat & light reflected off a nearby brick, stone, or stucco wall, help keep foliage dry too.
7. ACCESS- Must be able to deadhead & prune. Lavender only blooms on new growth. In our climate it should be pruned back about 1/3 of it’s height & shaped to keep the mound-like shape in early January unless we have an extremely cold winter. If so, then early spring. You can prune lightly after deadheading spent blooms to promote new growth throughout bloom season. Add 1 inch of composted materials around plant each spring or lightly fertilize with slow time-release fertilizer. Do not over fertilize. Lavender doesn’t need much fertilizer.
Lavender may grow best for you in a container. Photo by Beth Bolles, UF IFAS Extension Escambia County.
If you are new at growing lavender, try pots. You could try several varieties in different locations to better understand which conditions & locations will work best in your garden. The beauty of pots is their portability. If one location doesn’t work, you can move the pot.
All lavender is edible. You can use the leaves or flowers, fresh or dried. Fragrant lavender is a wonderful addition to your garden although in our climate, most lavenders are not going to be long lived. If you have found “the spot” in your own little microclimate & your lavender thrives year after year, consider yourself lucky.
by Larry Williams | Apr 23, 2020
One of the things to do while stuck at home due to COVID-19 restrictions, is to look for caterpillars and butterflies in your landscape. I’ve noticed giant swallowtail butterflies (Papilio cresphontes) a little early this year. The giant swallowtail is one of the largest and most beautiful butterflies in our area. Its larval stage is known as the orangedog caterpillar. This unusual name comes from the fact that it feeds on young foliage of citrus trees.
Orangedog caterpillar. Photo credit: Donald Hall, University of Florida
The orangedog caterpillar is mostly brown with some white blotches, resembling bird droppings more than a caterpillar. When disturbed, it may try to scare you off by extruding two orange horns that produce a pungent odor hard to wash off.
I’ve had some minor feeding on citrus trees in my landscape from orangedog caterpillars. But I tolerate them. I’m not growing the citrus to sell. Sure the caterpillars eat a few leaves but my citrus trees have thousands of leaves. New leaves eventually replace the eaten ones. I leave the caterpillars alone. They eat a few leaves, develop into chrysalises and then emerge as beautiful giant swallowtail butterflies. The whole experience is a great life lesson for my two teenagers. And, we get to enjoy beautiful giant swallowtail butterflies flying around in our landscape and still get plenty of fruit from the citrus trees. It is a win, win, win.
In some cases, the caterpillars can cause widespread defoliation of citrus. A few orangedog caterpillars can defoliate small, potted citrus trees. Where you cannot tolerate their feeding habits, remove them from the plant. But consider relocating the caterpillars to another area. In addition to citrus, the orangedog caterpillars will use the herb fennel (Foeniculum vulgare) and rue (Ruta graveolens) as a food source. Some butterfly gardens plant citrus trees to provide food for orangedog caterpillars so that they will have giant swallowtail butterflies. So you could plan ahead and grow some fennel, rue or find a butterfly garden in your area for the purpose of relocating the larvae.
Yellow giant swallowtail butterfly on pink garden phlox flowers. Photo credit: Larry Williams
The adult butterflies feed on nectar from many flowers, including azalea, bougainvillea, Japanese honeysuckle, goldenrod, dame’s rocket, bouncing Bet and swamp milkweed. Some plants in this list might be invasive.
Keep in mind that mature citrus trees can easily withstand the loss of a few leaves. If you find and allow a few orangedog caterpillars to feed on a few leaves of a mature citrus tree in your landscape, you and your neighbors might get to enjoy the spectacular giant swallowtail butterfly.
More information on the giant swallowtail butterfly is available online at http://edis.ifas.ufl.edu/in134.
by Beth Bolles | Apr 23, 2020
Cucumbers are a favorite fruit of many gardeners and with a little routine care, you can harvest fresh fruit from your own home garden. Learn some basic information about starting your own cucumbers In the Backyard Garden with UF IFAS Extension Escambia County.
by Matt Lollar | Apr 23, 2020
I was recently sent some pictures of some unusual growths on pecan tree leaves. At first glance, the growths reminded me of the galls caused by small wasps that lay their eggs on oak leaves. However, after a little searching it became apparent this wasn’t the case. These galls were caused by the feeding of an aphid-like insect known as phylloxera.
Leaf galls caused by pecan phylloxera. Photo Credit: Matt Lollar, University of Florida/IFAS Extension – Santa Rosa County
The feeding from the phylloxera causes the young leaf tissue to become distorted and form a gall that encloses this female insect called a “stem mother”. These insects are rarely seen, but the hatch from over-wintering eggs in March/April just after budbreak. Once hatched, these “stem mothers” crawl to the new leaves and begin feeding. Once the gall forms, they start to lay eggs inside the gall. The eggs hatch inside the gall and the young phylloxera begin to feed inside the gall and the gall enlarges. The matured insects break out of the gall in May and some will crawl to new spots on the leaves to feed and produce more galls.
Pecan stem damage from phylloxera. Photo Credit: University of Georgia
There are two common species of phylloxera that infect the leaves. The Pecan Leaf Phylloxera seems to prefer young trees and the Southern Pecan Leaf Phylloxera prefers older trees. The damage from each of these insects is nearly indistinguishable. Damage from these insects is usually not severe and merely an aesthetic issue.
Once the damage is discovered on a tree, it is too late to control the current year’s infestation. There are currently no effective methods for control of phylloxera in home gardens. Soil drench applications witha product containing imidacloprid have been limited in their effectiveness.
by Molly Jameson | Apr 15, 2020
During the COVID-19 crisis, many of us have found that we have more time for activities at home. One activity that can be beneficial to your mental and physical health is gardening. Not only will gardening get you moving physically, but simply being outdoors can help you feel more relaxed during these stressful times. By vegetable gardening, you get the added bonus of becoming more self-sufficient by growing your own healthy food.
You can still gather your gardening supplies at local garden centers during COVID-19. Photo by Brenda Buchan.
To grow vegetables successfully, you will need some basic gardening supplies. This includes seeds or seedlings, fertile soil, gardening tools, and irrigation materials. If you are an avid gardener, you may already have these items at your house. But if you are new to gardening – or if you are simply missing an essential item in your everyday gardening arsenal – where do you go?
Thankfully in Florida, industries regarded as essential during these tough times include food, agriculture, and infrastructure support services. This means farmers, farm workers, farmers’ markets, produce stands, food banks, agribusiness support services, and landscaping services can continue to operate.
But for these essential services to operate safely, they still need to follow social distancing principles to protect the health of both their customers and workers. Therefore, many of our agriculture and horticulture industry personnel are finding ways to adapt. Although this involves making many adjustments, operations such as garden centers and plant nurseries are changing how they function to meet the demand of their customers while remaining safe.
Become more self-sufficient by growing your own healthy food in your backyard. Photo by Molly Jameson.
For example, Native Nurseries in Tallahassee has temporarily closed its doors to the public, but they offer pickup and delivery options that are consistent with social distancing guidelines. Customers can either email or call the nursery and provide their contact and billing information, their purchase requests, and specify either pickup or delivery. Pickup orders are placed in a labeled designated parking space for the customer. For a fee, Native Nurseries also offers delivery of purchased items.
If you plan to make a trip to a garden center or plant nursery, call ahead or check the company’s website to learn about its social distancing policies, pickup and delivery options, and any potentially reduced hours of operation.
By continuing to support our local agriculture and horticulture businesses, we can ensure that they can weather this storm and continue to provide us with their essential services long into the future.
So, gather your supplies, stay home, and get your spring and summer vegetable garden growing!
For more information about essential services in Florida, visit: https://www.floridadisaster.org/.
by Beth Bolles | Apr 1, 2020
Bush beans are an easy and enjoyable plant to grow in the home garden. These particular beans do not require a trellis and will be ready to start harvesting in about 50 days. Learn more about growing your own bush beans with UF IFAS Escambia County Extension In the Home Garden.
