While we think of most flies as pests, garden flies, such as Allograpta obliqua species found in Florida, are excellent pollinators and predators of insects. Photo by Jessica Louque, Smithers Viscient, Bugwood.org.
While our sentiments toward flies usually involve fly swatters, believe it or not, not all flies are nuisance pests! Some types of flies can actually be quite helpful in the garden.
These garden flies are nothing like your typical pesky house fly. While house flies and garden flies are both insects in the order Diptera, they are not in the same insect family, which is the next classification down in Linnaean taxonomy.
The nectar-loving garden flies that specifically visit flowers are in the family Syrphidae and are known as Syrphid flies, hoverflies, or flower flies. Although not as well-known in the pollinating world, there are almost 900 species of flower flies in North America, and they can be very colorful and eye-catching in the garden.
Allograpta obliqua flower fly adults are small and have bright yellow and black crossbands on their abdomens. Photo by Susan Ellis, Bugwood.org.
One of the most common flower flies in Florida is the species Allograpta obliqua. Members of this species, also called hoverflies, are often mistaken as fruit flies, and can therefore be perceived as harmful. But to the contrary, adults cross pollinate many flowers, and hoverfly larvae feed on predators, such as aphids that attack vegetables, fruit trees, cotton, ornamentals, and many wild plants. In fact, when there are numerous hoverfly larvae present, they can reduce aphid infestations by 70 to 100 percent!
Allograpta obliqua adults can be hard to spot, as they are a mere six-to-seven millimeters in length. Although small, they have distinct bright-yellow and black crossbands on their abdomen and become particularly abundant in the spring and summer here in the Florida Panhandle.
So, before you go swatting at any ole fly you see, remember that flower flies are our allies in the garden. Adults will aid in the pollination of our crops and landscape plants, and larvae will help defend our spring and summer veggies from the devastation of harmful insect attacks.
University of Florida IFAS Extension and the Beekeeping in the Panhandle Working Group have once again teamed up to offer the 9th Annual Beekeeping in the Panhandle Conference on Friday May 6th and Saturday May 7th 2022 at the Washington County Ag Center Auditorium.
This year’s event will feature: Hands-on open hive experiences, presentations on the latest in research-based beekeeping management practices, interaction with expert beekeepers, vendors with beekeeping equipment, and hive products. Door prizes will be available as well!
The registration fee for the event will be $35 for one day or $55 for both days and $15 per day for youth 12 and under.
The activities will take place from 8:00 am – 5:00 pm Central Standard Time each day and will include a catered lunch.
Misplaced junipers growing over sidewalk. Photo credit: Larry Williams
A number of years ago, I had the opportunity to speak at the International Flower and Garden Festival at Epcot in Orlando. I provided eight presentations on the topic “Right Plant, Right Place.”
The audiences consisted of people mostly from Florida but there were attendees from other parts of the U.S. and even from other countries. I started each presentation with the question, “Do any of you have all the right plants in all the right places in your landscape?” Not a single hand was raised in response to this question.
Most people do not have all the right plants in all the right places in their landscapes, including myself. Hopefully, no one is on the other extreme of having all the wrong plants in all the wrong places, either.
Most people fall somewhere in between these two extremes. As a Florida gardener, you’d be wise to better implement this idea into your landscape.
Right plant, right place does require some knowledge of your property’s site conditions and knowledge of plants to be used on the site. The main idea is to best match the plants to the existing site conditions.
Misplaced large oak tree that needs more root space. Photo credit: Larry Williams
How often do we place shade loving plants in full sun or poor salt tolerant plants along the coast or plants that are native to wet areas such as wax myrtles on deep sandy, dry sites? These misplaced plants will not be “happy” and eventually will have problems.
How often do we take a plant in a gallon size container, plant it under a low window and expect it to stay the same size? Or, what about the sixty-foot tree under a twenty-foot power line. Plants are designed to grow.
Find out the mature size, in height and width, and place the plant where it has plenty of room to develop into its mature size.
Right plant, right place involves choosing plants that will standup to our wind, climate, humidity, heat, rain, winter weather, etc. Certain plants such as tulip and lilac don’t perform well here because of the lack of sufficient cold weather and the fact that it becomes too hot too early. But we can grow other flowering bulbs such as amaryllis and other flowering shrubs and trees such as crape myrtle and chaste tree.
With some planning and forethought in selecting and placing plants, your Florida landscape can be aesthetically pleasing, easier to maintain and more Florida-friendly.
Strawberry bush with new spring growth. Photo by Beth Bolles, UF IFAS Extension Escambia County.
When I was first planting a landscape in 2001, I wanted to include some interesting native plants to provide a natural look for the back edges of the property. I was able to find a few less commonly sold natives from a small local nursery including a Bigleaf magnolia, Vaccinium, Sourwood, Cinnamon fern, and Strawberry bush.
Twenty years later, I am still enjoying these natives in my landscape and they are doing well despite my sandy, well drained, nutrient poor conditions. One of my favorites of this group is the Strawberry bush, Euonymous americana.
Strawberry bush is a deciduous shrub that grows about five feet tall. It has multiple stems with new stems forming each season. Since my yard is so dry, my clump is by no means out of bounds after 20 years of growth. Small pale green flowers grow from the nodes in spring. For most of the year, you forget about this plant until one day in the fall, you notice brilliant red fruits that split open to show orange seeds. Another common name is Hearts-a-bustin’.
Fall color with Strawberry bush. Photo by Beth Bolles, UF IFAS Extension Escambia County.
Despite one of its common names, Strawberry bush is not grown as an edible for people but serves as a wildlife food source. Deer may enjoy leaves and twigs and many birds and small mammals will eat the seeds.
If you find a local nursery that is growing a few, consider adding Strawberry bush to a shaded spot in your landscape.
Bats give birth upside down–and a nursing female bat can eat up to 4,000 insects per night! Photo credit: Carrie Stevenson, UF IFAS Extension
I have a soft spot for bats. I know, I know, they give people the creeps and can show up in unwanted places (like attics and sheds). But collectively, the bats in our communities eat millions of mosquitoes and agricultural pests every night. Without them, we’d be overrun with insects, disease, and damaged crops.
This mother bat and two of her babies are nearly the same size. Female bats nurse and care for their newborns until they can fly on their own. Photo credit: Carrie Stevenson, UF IFAS Extension
As a mom, I also have the utmost respect for bat mothers. When a member of this acrobatic species gives birth, it’s done while hanging upside down by her feet. When the baby is born, mom catches it in her wings and the newborn crawls up to her abdomen. Bat babies are not tiny, either—at birth, they are typically up to a third of an adult bat’s weight. Can you imagine giving birth to a 40-50+ pound baby, while hanging from your feet? Thankfully, most births are single pups, but occasionally multiples are born. Through our local wildlife sanctuary, I once met an exhausted bat mother of triplets. She and her new brood were found together on the ground—mom was unable to carry all three with her as she flew.
Summer is maternity season for female bats, typically giving birth in May or June. Being fellow mammals, bats must stay near their newborns to nurse. It takes about three weeks for juvenile bats to learn to fly. During that time, they either cling to their mother, nursing on the road, or stay behind in a maternity colony as she feeds at night. For that reason, during the period from April 16-August 14, it is illegal to “exclude” or prevent bats from returning to their roost—even if it’s your attic. Blocking a bat’s re-entry during this time frame could result in helpless newborn bats getting trapped in a building.
Hundreds of thousands of bats emerge from the Congress Avenue bridge in downtown Austin, TX on a summer night. Photo credit: Visit Austin
So, if you have seen evidence of bats flying in and out of your attic—or another building that should not house them—you will need to wait until August 15 or later. Excluding bats from a building entails waiting for the bats to fly out at night and putting up some sort of barrier to prevent their return. This can be done using several different methods explained in this video or by using a reputable wildlife professional. The Florida Fish & Wildlife Conservation Commission has regulatory oversight for bat-related issues, and they will work with homeowners to arrange a positive outcome for both the homeowner and the animals involved.
The bat houses on UF’s campus house are home to approximately a half million bats. Photo credit: Carrie Stevenson, UF IFAS Extension
On just about any spring or summer night at dusk, you can look up and see bats darting around, chasing and catching insects. If you are a total bat nerd like me, there are also several places around the southeast with large bat houses for public viewing. In Gainesville, the University of Florida bat houses are home to over 450,000 bats that leave the houses every night. An even larger colony in Austin, Texas (750,000-1.5 million bats) flies out at sunset every night to forage from their dwelling under a downtown bridge. Both are fascinating experiences, and worth a visit!
If you’re interested in building a bat house for your own backyard, reach out (ctsteven@ufl.edu); I have examples at the office and several sets of plans for building bat houses and installing them correctly. The publication, “Effective Bat Houses for Florida” goes through the best way to figure out where to place a house and includes a set of plans.
