by Julie McConnell | Jan 13, 2015
This dead oak tree was trimmed up to make it neater. It is ready for a wildlife resident! Photo: JMcConnell, UF/IFAS
One of the management issues that any landowner will face at some point is what to do when a tree dies in the landscape. The logical response is “cut it down,” but depending on the location and the size of the tree, that may not be necessary and you could be removing potential wildlife habitat.
With any other major decisions about your landscape, always consider safety first. If the tree is in a location where it could damage property or cause harm to people or domesticated animals then it should be properly removed. But what about those trees that are along wood lines or in the far reaches of the yard and not threatening person or property?
Consider leaving the entire tree or modifying it to make it more aesthetically pleasing yet still useful to wildlife. Weak branches or unstable tops may be removed to make the snag less of a risk or to look a little neater.
Some examples of animals that may use dead trees in the landscape are birds, bats, squirrels, frogs, and lizards. Besides the obvious cavity dwelling creatures such as woodpeckers, owls, and bats that are attracted to decaying trees, other animals will be drawn for other reasons. Dead trees in the landscape will become inhabited by insects and fungi which are terrific food sources for birds, mammals, amphibians, and reptiles!
To learn more about providing wildlife habitats in your landscape, please see the EDIS publications listed below or contact your local extension office.
Helping Cavity-nesters in Florida
A Birds-Eye View: How Birds Select Habitat
Dead Wood: Key to Enhancing Wildlife Diversity in Forests
by Sheila Dunning | Dec 2, 2014
Camellias have been a part of the landscape in the Southeastern United States for over 200 years. They are native to Asia and were introduced near Charleston, South Carolina in 1786. The common name camellia refers to varieties and hybrids of Camellia japonica and to lesser known varieties of C. sasanqua and C. reticulata. The growing conditions in Northwest Florida are well suited for many camellia varieties. Camellias can serve several functions in the landscape including foundation plantings, screens, accent plants, background groupings and hedges. Maximum benefit can be achieved by mass plantings or groupings. Single plants should be focal point in beds rather than randomly placed throughout the lawn. Camellias flower in the fall and winter when their display of colorful blooms is most appreciated. During the remainder of the year their evergreen foliage, interesting shapes and textures, and relatively slow growth make camellias excellent landscape plants. Some camellia growers enjoy competing in flower shows and manipulate the flower buds to achieve larger and earlier flowers. This involves removing competing flower buds and applying gibberellic acid (a plant hormone). Individual cultivars can be selected for size and form ranging from small and irregular to large and upright. Texture and foliage color also differ among the various species and multiple varieties. Mid-season flowering varieties that bloom from November through January are best suited for Florida conditions.
Warm fall temperatures may prevent early varieties from flowering properly. Late-blooming selections may attempt to send out new leaves before the end of the flowering period which results in “bullnoses”. Bullnosing is characterized by poor quality flowers which do not open fully and may even drop while still tight buds. Extended dry periods while in the bud stage can make the condition more likely. While flowering, camellias need 1 inch of water applied each week. Camellias perform best in partially shaded locations which are enhanced by good drainage and air movement. Fertile, acidic soils high in organic matter are preferred. The soil must be well-drained because camellias will not grow in wet areas. Do not plant them in areas with a high water table and/or hard-pan. This will result in a shallow root system which is more susceptible to injury during dry periods. Camellias should be installed where cold air can move in and out freely, but the area should be protected from strong northwest winds. Plantings under established trees or in areas that has structures to block the wind are usually injured less by cold temperatures. These conditions enable the plants to gradually thaw or warm in the morning before being exposed to direct sunlight. Dense shade may result in sparse foliage and poor flowering. Camellias exposed to full sun may appear yellow-green, but may yield more flowers. Either situation is stressful to the plants and can lead to pest problems. Tea scale is the most common insect on camellias. Scales generally feed on the underside of leaves and may not be noticed until large populations have developed. Symptoms include very small elongated white and/or brown raised “flakes” on the underside of leaves that turn yellowish in color. Tea scale can be controlled with horticultural oil, sprayed after flowering finishes but while temperatures are sill cool, in late winter.
by Sheila Dunning | Nov 4, 2014
Since 2005, multiple varieties of Diascia have added to the U.S. fall market of winter flowering plants. Its delicate flowers are far from ordinary though. In the early part of the last century most British gardening encyclopedias listed just one diascia – Diascia barberae – derived from seed collected by Col. J. H. Bowker and sent by Mrs. Barber to Kew Gardens, England, in 1870. Annual and perennial diascias had, of course, already been discovered and classified by several botanists visiting South Africa much earlier. The dainty, little annual, Diascia barberae, is not a very showy flower, but one which will appeal to the true flower lover. The flowers are rosy pink with yellow-green spots in the throat. The flowers are lipped, being related to the Snapdragons, but have two spurs on the lower lips, and are sometimes called twinspur. It was not until John Kelly was given a plant called Diascia cordata by Edrom Nurseries in 1971 that anything notable happened to diascias again. He took pollen from his Diascia cordata and applied it to one flower of Diascia barberae. Of the nine seeds he obtained, just one was worthy of attention. He named it Diascia ‘Ruby Field’ (not for the color of the flowers, but for a lady who devoted her live to the long-term care of deprived children). Despite the popularity of this new, hardy hybrid, little more happened with diascias for yet another decade. The boom in the diascia trade began only recently. Today’s diascia offers larger flowers, larger plants with a more open growth habit and colors ranging from scarlet through salmon and coral into pink. They bloom throughout the cooler weather and may behave as a perennial in warmer sites. But, the uniqueness of their flower structure and ecological role are as fascinating as the flower is beautiful. 
The common name of twinspur refers to the two downwardly pointing spurs found on the back of the flower. The spurs contain an oil which is collected in the South Africa wild by Rediviva bees. The female bees have unusually long, hairy forelegs that are used to collect the oil to feed her larvae. However, the Greek origin of the Diascia name doesn’t refer to the spurs, but rather the two sacs found in the upper part of the corolla. The flower petals help the bees to 
orient themselves to the oil glands of the spurs. While North Florida isn’t home to the Rediviva bee, we can grow Diascia and it is a wonderful opportunity to show the unique connection insects and plants can have. Look for other specialized flower structures and you will find other animals that fit them perfectly, even within the species found in the Panhandle.
by Beth Bolles | Nov 4, 2014
Take a walk through the garden or woods this fall and you are sure to pass by a Green lynx spider. Unless you are very observant though, you will probably not realize that this common spider is perched upon flowers and low shrubs, ready to catch an insect meal.
An adult spider blends in well with plants. Photo by Beth Bolles, Escambia County Extension
Even though Green lynx spiders are very large, they are often well camouflaged in plant material. Spiders are bright green with a lighter color on the abdomen including some small red markings. The legs have distinctive black spines.
This spider does not spin a web but actively hunts insects using a dragline as it quickly moves or jumps over plants. It is an opportunistic feeder catching many types of insects that are visiting flowers. It has been noted as an important predator of some crop damaging insects.
Females will normally lay one egg sac in the fall and guard it from predators. It is constructed in the upper portions of branches and has webbing connecting it to nearby plant leaves. This webbing becomes a protective area for the emerged spiderlings until they are able to take care of themselves.
Lynx spiders pose no harm to people and should be considered one of many beneficial arthropods that we see in Florida.
Young spiderlings on a blackberry guarded by the adult. Photo by Beth Bolles, Escambia Extension
by Carrie Stevenson | Nov 4, 2014
I recently met with a group of community volunteers who are interested in providing more butterfly habitat in our public areas. Monarchs migrating to Mexico this time of year use northwest Florida as a stopover and feeding site, but if host plants are unavailable they cannot sustain a healthy population. In addition, Gulf fritillaries, buckeyes, and swallowtails are spending time in local butterfly gardens, feeding on passion vine, butterfly bush, milkweed, and more.
The grassy area between this stormwater pond and woods is an ideal location for a butterfly garden. Willows growing along the edge attract butterflies already. Photo credit: Carrie Stevenson
The volunteers and several county staff visited three publicly-managed stormwater ponds, which are an ideal setting for what some proponents term “Butterflyscaping.” The open space, water source, and diversity of plants along the edge of the ponds lend themselves well to wildlife habitat.
The permanently wet detention pond lined with cypress trees and sawgrass also provides habitat for fish, birds, and reptiles. Photo credit: Carrie Stevenson
When considering adding vegetation to a neighborhood common area, there are several things to consider. First is maintenance. If there’s an annual contract with a landscaping company to mow or maintain an area, you’ll want to have a discussion about excluding the new planting area from mowing to establish new vegetation. You’ll also want to look at the soil and amount of sunlight to determine the best plant choices for the area.
A variety of groundcovers, flowering plants, shrubs and small trees will typically provide food for both caterpillars and adult butterflies. Once established, these new landscape additions will not only provide habitat and color, but may end up reducing maintenance costs as well.
For more information, the UF publication “Community Butterflyscaping” is an excellent resource for landscape design, plant choices, and practical steps toward getting started with a neighborhood or schoolyard project.
by Beth Bolles | Oct 28, 2014
A common question about insects when cold temperatures arrive is whether or not the cold will kill many pests. Although temperatures will occasionally drop below freezing in north Florida, it is normally not cold enough to significantly impact insect populations for the upcoming year.
Typical white grub of the genus Phyllophaga. Photograph by John L. Capinera, UF / IFAS
Even when we do receive a significant amount of cold weather, insects have many methods to survive weather changes. Some insects survive by moving to micro-habitats that are more resistant to temperature fluctuations. Beetle larvae may move deep in the soil or into logs and trees for protection. The grubs can continue feeding on decomposing material throughout winter months. Beneficial insects such as dragonflies and damselflies stay protected in their nymph forms in the mud of ponds and lakes.
One of the most famous insect survival strategies is migration. We are all familiar with the late summer and fall flights of the monarch butterfly to warmer regions of Mexico and southern California. Those butterflies and moths that do not migrate have their own survival techniques. They will overwinter in protective pupal cases to emerge as adults in the spring. Moth cocoons are spun of silk and may be composed of multiple layers, making them a good protection for the transforming insect.
Insects are adapted for survival and can live through far colder winters than we experience. Even though our cold weather will not drastically change insect populations, periods of cold will at least slow down their activity enough for us to enjoy a break from many pest worries.
