There are some key practices that are necessary to make sure your trees and shrubs establish and thrive in your landscape. Learn a few pointers from UF IFAS Extension Escambia County to promote healthy establishment after correct plant installation. Learn about installing shrubs with the UF IFAS publication Establishing Shrubs in the Florida Landscape.
Tree dieback is a complex syndrome and slow developing. Dieback is essentially a process in which trees lose leaves and limbs. This usually occurs as a result of severe stress to the tree’s bark or root system, but could be a result of a declining life cycle.
It’s important to note that there is a significant balance between a tree’s root system and the number of leaves and limbs it can support. For example, if a tree loses part of its root system, possibly due to disease or lawn equipment damage, the tree will forfeit a portion of its leaves. Dieback doesn’t happen overnight, though. It’s a slow process, with larger trees taking much longer time for signs of stress to emerge. However, a large tree root system is very sensitive to damage, whereas a small tree will adapt quickly and is much more resilient to damage. So, what can be done to prevent dieback in trees?
First and foremost, trees, like all living things, have a natural life cycle. Regardless of how you care for your trees, dieback will occur. The most important management measure in extending the life of a tree is to protect the root system and bark.
With each passing year, a tree grows new bark in the rejuvenation process. The bark replacement process inevitably becomes more difficult as the tree gets older and in turn the tree is more and more susceptible to dieback. If the bark becomes damaged, especially later in the tree’s life cycle, then fungi and insects have a much greater chance to cause serious harm. Treating bark damage with a wound dressing to prevent decay is the recommended procedure.
Lichens come in many forms and are commonly blamed for the decline and death of trees and shrubs, however they do not cause harm. Credit. Sydney Park Brown and Joseph Sewards, UF/IFAS.
A common misconception is that epiphytes, such as lichens and Spanish moss, are tree diseases. Epiphytes are known as “air plants” and thrive in the Panhandle. They survive on moisture and nutrients in the atmosphere and are harmless to trees. However, a tree that becomes inundated with epiphytes may be an indicator of excessive soil moisture, which may lead to root rot.
Lawn weed killers can have detrimental effects to trees, even if the application seems to be from a safe distance. When using a weed killer near a tree’s root system, confirm on the label that the product is designed to kill green growth only. It can’t be overstated that excessively fertilizing an old tree will greatly accelerate the decline of the tree. Some may think this will stimulate a tree and extend its life, but instead it will do the opposite. Young trees can tolerate fertilizer applications, as they need crown growth. Older trees will simply become top heavy, and structural damage will likely occur.
Don’t forget, trees need space too. A mature tree forced to occupy a small space will simply not adapt. Be sure to have adequate spacing when planting younger trees and shrubs in the vicinity of older trees. Also, keep your trees pruned away from touching structures and utilities.
Tree dieback is a complex issue to manage. By following these measures, you can help extend the life of your trees and continue to have a picturesque landscape.
For more information on tree dieback, contact your local county extension office.
Please visit Florida Friendly Landscaping, http://fyn.ifas.ufl.edu/, for more information on maintaining your landscape.
For more general information on lichens, please see UF/IFAS EDIS document “Spanish Moss, Ball Moss and Lichens-Harmless Epiphytes” by Joe Sewards and Dr. Sydney Park Brown: https://edis.ifas.ufl.edu/pdffiles/EP/EP48500.pdf
UF/IFAS Extension is an Equal Opportunity Institution.
Photo by Full Earth Farm.
Yes, that’s right! We made it through the hottest part of the year and we are looking ahead to fall just around the corner! I am excited to be discussing September and what we can do to prepare for fall in the garden. As the nighttime temperatures start to cool down, we are given many more options.
For annual color plantings in September, try Ageratum, Celosia, Zinnias, and Wax Begonia to add fall color to your landscape. Bulbs will also add color, texture, and pattern to a bed. If you have some extra space, a variety of elephant ears could really accent a bed or you could always go with the classic calla, narcissus or zephyr lily. Popular vegetables to plant in North Florida in September are broccoli, carrot, cabbage, and collards. See Vegetable Gardening in Florida This is also the time of year to establish strawberry plants. Some great herbs to get started are Mexican tarragon, mint, rosemary, and basil.
Image Credit: Matthew Orwat UF/IFAS Extension Washington County
There are many things that can be done in your lawn during September. Monitoring your lawn for its health and potential insect pests is important this time of year. Common insects to scout for are fall armyworms, chinch bugs, mole crickets, and sod webworms. The last fertilizer application should be done by the middle to end of September. Make sure you choose a fertilizer with little to no phosphorus unless a soil test shows differently. To maintain a healthy lawn, avoid weed and feed products and only apply herbicides in areas with high infestations of weeds. Weed and feed products are not recommended because the timing of when to fertilize and the timing of the weed killer is not always the same. The best management practice is to use a separate treatment for weeds and when possible spot treat weeds.
If you already have bulbs in your landscape from previous growing seasons, this is the time to divide and replant those that are big. You can also add organic matter to new planting areas. Continue working on your vegetable plants and prepare them for either transplants for a fast start, or plants seeds for more variety. Throughout your landscape, it is important that plants are getting the right amount of water as we go in and out of wet and dry weather this time of year.
October will be here before we know it in just a couple of weeks. Look out for the next article to come. We will be getting into the cooler nights and more options for planting vegetables and herbs!
Bald eagles and other large birds of prey have made a comeback in Florida.
Florida has all the elements of a wild animal’s paradise. The state has abundant rain and water sources, lush vegetation, plenty of food, and tons of nesting and hiding places. In our state and national parks, conservation easements, open waters, and acres of ranch land, large populations of animals can thrive. Particularly in areas with fewer people, healthy populations of even large animals like black bears, alligators, and panthers can maintain substantial territories. However, human migration into and throughout Florida is increasing at as steady a rate as ever. Retirees have long fled their cold northern winters to move part or full time to Florida. Now, the ability for many working people to telecommute from anywhere has made it attractive for younger families from all over the country to join us.
A black bear helps himself to a drink from the swimming pool of a Florida home. Photo provided by Patty Underwood/FWC
With more people comes the need for more housing. Some are content with high rise condos that leave a smaller footprint, but these are often located right on the water and can displace coastal wildlife and vegetation. For the thousands of families moving in weekly, more subdivisions, roads, stores, and schools are necessary. Inevitably, these lead to human-wildlife interactions that may or may not be positive experiences. In fast-growing south Santa Rosa County, I see almost daily reports of large black bears in backyards and trash cans. For smaller mammals, the threat of being hit by a car is unfortunately very common. For nearly every call we get about an exciting manatee sighting, we get word of a nerve-wracking interaction with a snake. As civilization moves closer to forested, once-wild areas, wildlife can be squeezed out, left without the protection of natural cover and drawn to human food and habitat.
A lush backyard landscape surrounds a recognition sign from the National Wildlife Federation. Photo credit: Carrie Stevenson, UF IFAS Extension
There are plenty of ways we can co-exist, though. A Florida-friendly yard is a wildlife-friendly yard, and those who go the extra mile can even be recognized by the National Wildlife Federation for their efforts. There are several steps one needs to take to become wildlife-friendly. The most important include providing food, water, and cover, so the animals’ basic needs are met. Actions like removing invasive species, keeping pets supervised when outdoors, and adding layers of vegetation are also excellent ways to attract and protect native creatures.
While small and medium sized animals can find shelter in a single yard, it takes neighborhood cooperation to be a haven for something larger, like deer, bears, birds of prey, or large tortoises. Some neighborhoods are designated from the beginning to include conservation easements that serve as amenities to the neighborhood. They include trails, shady waterfront areas, and plenty of space for wildlife. It is important when moving into one of these neighborhoods that each homebuyer understands and respects the purpose behind conservation areas. Residents of older, existing neighborhoods can also work together to designate common areas and stretches of adjoining yards as wildlife-friendly corridors, allowing more animals to use the space safely.
A gopher tortoise burrow is noted by a sign in a local city park. The tortoise is co-existing peacefully with its neighbors! Photo credit: Carrie Stevenson, UF IFAS Extension
In my own neighborhood in the city limits, a gopher tortoise has moved in and become a neighborhood mascot of sorts! When alerted to the presence of its burrow, the city brought in a sign explaining the animal’s protected status and crucial role in the environment. Floridians share their citizenship with thousands of other species. These breathtaking birds, fish, mammals, reptiles, and insects are integral to the health of our land and water. By taking steps to look out for their well-being, we are also providing for our own.
On August 12, 2021, our panel answered questions on a wide variety of landscape topics. Maybe you are asking the same questions, so read on!
Ideas on choosing plants
What are some perennials that can be planted this late in the summer but will still bloom through the cooler months into fall?
Duranta erecta ‘Sapphire Showers’ or ‘Gold Mound’, firespike, Senna bicapsularis, shrimp plant, lion’s ear
Where can native plants be obtained?
Dune sunflower, Helianthus debilis. Photo credit: Mary Salinas UF/IFAS Extension.
Gardening Solutions: Florida Native Plants – see link to FANN: https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/native-plants.html
What are some evergreen groundcover options for our area?
Mondo grass, Japanese plum yew, shore juniper, ajuga, ferns such as autumn fern.
What are some ideas for partial morning sun butterfly attracting tall flowers to plant now?
Milkweed, salt and pepper plant, swamp sunflower, dune sunflower, ironweed, porterweed, and salt bush.
I’m interested in moving away from a monoculture lawn. What are some suggestions for alternatives?
Perennial peanut, powderpuff mimosa, and frogfruit.
We are new to Florida and have questions about everything in our landscape.
Florida-Friendly-Landscaping TM Program and FFL Web Apps: https://ffl.ifas.ufl.edu/
https://ffl.ifas.ufl.edu/resources/apps/
UF IFAS Gardening Solutions: https://gardeningsolutions.ifas.ufl.edu/
What are some of the top trends in landscaping today?
Houseplants, edible gardens, native plants, food forests, attracting wildlife, container gardening, and zoysiagrass lawns
Edibles
Artwork broccoli is a variety that produces small heads. Photo credit: Mary Salinas UF/IFAS Extension.
What vegetables are suitable for fall/winter gardening?
Cool Season Vegetables: https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/cool-season-vegetables.html
North Florida Gardening Calendar: https://edis.ifas.ufl.edu/publication/EP451%20%20%20
Florida Vegetable Gardening Guide: https://edis.ifas.ufl.edu/publication/vh021
How can I add herbs to my landscape?
Herbs in the Florida Garden: https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/herbs.html
My figs are green and hard. When do they ripen?
Why Won’t My Figs Ripen: https://www.lsuagcenter.com/profiles/rbogren/articles/page1597952870939
What is best soil for raised bed vegetable gardens?
Gardening in Raised Beds: https://edis.ifas.ufl.edu/publication/EP472
And there are always questions about weeds
How can I eradicate cogongrass?
Chamber bitter is a troublesome warm season weed in our region. Photo credit: Brantlee Spakes Richter, University of Florida, Bugwood.org
Cogongrass: https://edis.ifas.ufl.edu/publication/WG202
Is it okay to use cardboard for weed control?
The Cardboard Controversy: https://gardenprofessors.com/the-cardboard-controversy/
What is the best way to control weeds in grass and landscape beds?
Weed Management Guide for Florida Lawns: https://edis.ifas.ufl.edu/publication/EP141
Improving Weed Control in Landscape Planting Beds: https://edis.ifas.ufl.edu/pdf/EP/EP52300.pdf
Landscape practices
Can ground water be brackish and stunt plants?
Reclaimed Water Use in the Landscape: https://edis.ifas.ufl.edu/publication/ss545
How can I prevent erosion from rainwater runoff?
Stormwater Runoff Control – NRCS: https://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/water/?cid=nrcs144p2_027171
Rain Gardens: https://gardeningsolutions.ifas.ufl.edu/design/types-of-gardens/rain-gardens.html
And https://gardeningsolutions.ifas.ufl.edu/pdf/articles/rain-garden-manual-hillsborough.pdf
What is the best time of the year to propagate flowering trees in zone 8B?
Landscape Plant Propagation Information Page – UF/IFAS Env. Hort: https://hort.ifas.ufl.edu/database/lppi/
Which type of mulch works best on slopes greater than 3 percent?
Landscape Mulches: How Quickly do they Settle?: https://edis.ifas.ufl.edu/publication/FR052
When should bulbs be fertilized?
Bulbs and More – UI Extension: https://web.extension.illinois.edu/bulbs/planting.cfm
Should I cut the spent blooms of agapanthus?
Agapanthus, extending the bloom time: https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/agapanthus.html
http://blogs.ifas.ufl.edu/wakullaco/2020/10/07/extending-bloom-time/
Plant questions
Monarch caterpillar munching on our native sandhill milkweed, Asclepias humistrata. Photo credit: Mary Salinas, UF IFAS Extension.
I planted native milkweed and have many monarch caterpillars. Should I protect them or leave them in nature?
It’s best to leave them in place. Featured Creatures: Monarch Butterfly: https://edis.ifas.ufl.edu/pdf/IN/IN780/IN780-Dxyup8sjiv.pdf
How does Vinca (periwinkle) do in direct sun? Will it make it through one of our panhandle summers? Can I plant in late August?
Periwinkles and No more fail with Cora series: https://gardeningsolutions.ifas.ufl.edu/plants/ornamentals/periwinkles.html#:~:text=Plant%20your%20periwinkles%20where%20they,rot%20if%20irrigated%20too%20frequently.
Insect and disease pests
What to do if you get termites in your raised bed?
The Facts About Termites and Mulch: https://edis.ifas.ufl.edu/publication/IN651
How to combat fungus?
Guidelines for ID and Management of Plant Disease Problems: https://edis.ifas.ufl.edu/publication/mg442
Are there preventative measures to prevent diseases when the humidity is very high and it is hot?
Fungi in Your Landscape by Maxine Hunter: http://blogs.ifas.ufl.edu/marionco/2020/01/16/fungi-in-your-landscape/
If you missed an episode, check out our playlist on YouTube https://www.youtube.com/watch?v=bp0HfdEkIQw&list=PLhgoAzWbtRXImdFE8Jdt0jsAOd-XldNCd
For those of you who tuned into the July 29 edition of Gardening in the Panhandle LIVE, beneficial insects was the topic of the day. Here are links to the publications our panelists talked about.
Mantid. Photo credit: David Cappaert, Bugwood.org.
How do I identify the kind of insect I have?
Recognizing beneficial bugs: Natural Enemies Gallery from UC Davis http://ipm.ucanr.edu/natural-enemies/
How to distinguish the predatory stink bug from the ones that harm our crops: https://entomology.ces.ncsu.edu/wp-content/uploads/2014/01/FL-pred.jpg
How to tell difference in stink bugs and leaf footed insects. Are both harmful? UF/IFAS Featured Creatures: leaffooted bug – Leptoglossus phyllopus (Linnaeus) (ufl.edu)
How can I tell bad beetles from good ones? Helpful, Harmful, Harmless Identification Guide is one resource available: http://ifasbooks.ifas.ufl.edu/p-153-helpful-harmful-harmless.aspx
How can we encourage beneficial insects?
How can we encourage the beneficial insect species?
Is it helpful to order beneficial insects such as lady bugs? Encouraging Beneficial Insects in Your Garden OSU: https://catalog.extension.oregonstate.edu/sites/catalog/files/project/pdf/pnw550.pdf
How effective is buying predatory insects to release in your greenhouse? Natural Enemies and Biological Control: https://edis.ifas.ufl.edu/publication/IN120
Can I buy beneficial insects to start breeding in my garden? Natural Enemy Releases for Biological Control of Crop Pests: https://www2.ipm.ucanr.edu/agriculture/natural-enemy-releases-for-biological-control-of-crop-pests/
What benefit would result by planting city right-of-ways with native wild flowers? https://edis.ifas.ufl.edu/publication/in1316; https://adamgdale.files.wordpress.com/2020/03/gcm_feb2020.pdf
Can an individual gardener sustain an ecosystem for beneficial insects? Penn State Article on beneficial insects that mentions some flowering plants that help support predators and parasitoids: https://extension.psu.edu/attracting-beneficial-insects
Specific Insects
How do I get rid of mole crickets? UF/IFAS Mole Crickets: https://edis.ifas.ufl.edu/entity/topic/mole_crickets
Are wasps really beneficial? Beneficial Insects: Predators!: https://sfyl.ifas.ufl.edu/sarasota/gardening-and-landscaping/horticulture-commercial/integrated-pest-management/beneficial-insects/
Is a dish soap solution effective against wasps? Soaps, Detergents, and Pest Management: https://gardeningsolutions.ifas.ufl.edu/care/pests-and-diseases/pests/management/soaps-detergents-and-pest-management.html
How to control leaf footed bugs? Handpick them, attract beneficials, create diverse plantings in landscape, accept some damage, and control them when in the juvenile stage.
Can you tell me about praying mantids? Praying Mantids: https://entomology.ca.uky.edu/files/efpdf2/ef418.pdf
Are there any beneficial insects that keep mosquito populations down? Dragonfly larvae in water, mosquitofish
What are the little insects that hop out of centipede grass? Are they beneficial?
Spittlebugs and your lawn: https://nwdistrict.ifas.ufl.edu/hort/2020/05/27/spittlebugs-and-your-lawn/
How to stop Eastern Black Swallowtail Butterflies laying eggs on parsley – the hatched caterpillars eat it all. Plant extra or put a screen over plant.
Extra fun video!
Take a look at this video of parasitic wasp attacking aphids: Parasitic Wasps | National Geographic – YouTube
