Many different Florida wildlife pass through a home landscape daily in search of food. Possibly the most destructive animal to landscape plants in northwest Florida is the White-Tailed Deer. Extensive amounts of damage can be observed after they have passed through. This damage is not just to landscapes but also impacts agriculture crops at an economic level.
Deer walking through a landscape in Northwest Florida. Photo Credit: Stephen Greer, University of Florida/IFAS Extension – Santa Rosa County
Deer are searching for protein that can be found in many forms that may include acorns from oak trees, ornamental shrubs, flowers, and soybeans. For this article, I will focus on landscape plants. Deer require a significant amount of forages as adults to amass 6 plus pounds per 100 pounds of body mass on a daily basis as they attain muscle and fat. Maintaining this level of growth is needed for quality reproductive rates and surviving the times of year, usually the winter, with less food available. Keep in mind damage is significantly lower from mid-spring to mid-summer with greater damage occurring from late-summer to late-fall.
Deer damage to a loquat tree. Photo Credit: Stephen Greer, University of Florida/IFAS Extension – Santa Rosa County
How to make informed plant decisions before placing them in the landscape and protecting many of these plants is a big question. There are many articles out there on selecting plants that are deer resistant or tolerant. Resistant to deer browsing is often dependent on how hungry they are and the amount of availability of other plants they prefer near by out of your landscape. With deer populations increasing significantly over the last few decades it has increased contact with people and the environments in which we live. To deter feeding and other damage to the landscape, fences have been placed as barriers, offensive smelling sprays have been used, lights and sounds have been used. The attempt is to offend more than one of the deer senses. These tactics work for a while until they adjust to these events and find their way back.
A barrier placed over a raised bed garden. Photo Credit: Stephen Greer, University of Florida/IFAS Extension – Santa Rosa County.
Some of the favored plants for deer include hosta, daylily, holly, and maple leaves and many more. Plants they tend to avoid are poisonous plants that include foxglove, poppies or fragrant plants from sage, salvias and bearded iris. There are publications with extensive lists of plants not to plant as they are a preferred food for deer and much shorter lists of plants they do not prefer. Contact your local UF IFAS Extension office for more information.
Deer, like many of the wildlife, were able to acclimate to neighborhoods and traffic settings. This has created additional dangers for many wildlife animals and people. The point is they are an established part of our communities. Determining how to best manage these growing populations has and will continue to be a big topic of discussion from neighbor to neighbor, community boards, farmers, and the Florida Wildlife Commission.
Recently, I’ve been asked about a deer fly trapping method that I wrote about a number of years ago. So, here it is. This aggravating insect is active now.
Deer flies, which are in the horsefly family, are annoying as they repeatedly and persistently dive for their victims until they inflict a painful bite.
Dr. Russ Mizell, now retired UF/IFAS Extension entomologist, experimented with a method to trap this insect. Mizell wanted to identify the optimum shape, size, color and speed to attract deer flies. If successful, he could temporarily remove a deer fly population long enough to enjoy an outdoor gathering without being bothered by deer flies.
Mizell said he started the research as a high school science project with his son but “it got so interesting, I just kept doing it.”
Deer flies wait for prey to walk before attacking. So, they are highly attracted to movement.
With this in mind, Mizell and his son decided the best way to snare deer flies was to “troll” for them from a slow-moving vehicle. Working in spring and summer when deer flies are most prominent, they set out to discover what kind of trap worked best.
They built a test platform on the hood of their vehicle that could troll seven different shapes at once. They ambled along in deer fly-infested countryside for set periods of one to five minutes, testing pyramids, squares, balloons, plant containers and other shapes, all coated with Tanglefoot (commercially available sticky spray for insects), then counting immobilized prey. They tried black, tan, blue and shapes of other colors suspended from various heights.
The trap that enticed the most deer flies proved to be a 6-inch flowerpot painted bright blue and coated with Tanglefoot. This trap captured as many as 30 deer flies in a one-minute test. It worked best when suspended three to six feet above the ground and trolled no faster than 10 feet per second or about 7 miles per hour.
The traps are remarkably effective, Mizell said. “Many times, after running the traps through an area, we found there were no deer flies left,” he said. “You trap them out for a short period until they repopulate the area.”
The traps also work when attached to a baseball cap and trolled by the hat’s wearer. But instead of attaching a flowerpot to your cap, you could attach a blue drink cup painted with Tanglefoot.
Despite its effectiveness, its aesthetic appeal leaves something to be desired.
White tailed deer. Photo credit: Rebekah D. Wallace University of Georgia bugwood.org.
There doesn’t seem to be any shortage of deer in the panhandle, especially when it comes to them strolling in my yard looking for something tasty to eat. My vegetable garden suffered repeated assaults by hungry deer this past fall and winter. The garlic and cayenne pepper-based products only worked for a few days when freshly applied. I had to try something new this spring.
And my new method has worked. I purchased a motion activated high impact sprinkler that can be set to activate day or night. It has worked like a charm! There are various vendors but I purchased mine through a hardware store online for about $70. I put a splitter on my closest outdoor spigot and have a dedicated hose running to the sprinkler. This allows me to also have a regular hose for watering attached to the spigot. The hose must be turned on all the time. One problem that I am hoping to avoid this summer is that the water in the hose may get too hot in the summer heat and split the hose, so I am looking to maybe trench to keep the hose and the water inside a bit cooler.
Motion activated impact sprinkler protecting the vegetable garden from ravenous deer. Photo credit: Mary Salinas, UF/IFAS Extension.
You can also choose plants that deer do not like to eat such as live oak, dogwood, muhly grass, coneflower and black-eyed Susan. However, keep in mind that when food is scarce deer will forage on plants that they normally would not eat. Southern magnolia is considered quite deer resistant but the one I planted this past winter was mostly defoliated by deer.
Missing rose buds, pulled up pansies, and damaged tree trunks are all signs that something has been visiting your garden while you are away. But what could it be? Most gardeners are familiar with leaf spots caused by fungal diseases or minor feeding damage by insects, but to see half a shrub or an entire flower bed demolished overnight indicates a different type of pest.
There are several mammals that visit home landscapes and may cause damage, especially in times of drought when natural food sources are limited. Because we provide water for our landscapes, our plants tend to have lush new growth at times when plants in natural areas have slowed growth because of a lack of water or other stressors that managed gardens do not face. So, it’s no surprise that herbivores will be attracted to our landscape for a midnight snack.
It is important to determine what is causing damage so that you can employ protective tactics if possible. Some things to look for to try to figure out who the culprit is are footprints, dropping, feeding clues (bite marks, scrapes, etc.), or other distinctive damage. For more details about how to tell the difference between damage caused by multiple pests see How To Identify the Wildlife Species Responsible for Damage in Your Yard.
Once you have determined what is causing the damage you can try some different strategies to deter future feeding. Some plants may be impossible to protect, but before you spend your money and time check out these recommendations by wildlife specialists at the University of Florida in How to Use Deterrents to Stop Damage Caused by Nuisance Wildlife in Your Yard
