Flowering dogwood (Cornus florida) is a small understory tree that grows up to 25 or 35 feet. Its natural range extends from eastern Canada all the way to North Florida. Dogwoods were heavily planted in urban and suburban areas in Tallahassee in the late 1950s through the 70s. Many of these trees have died, due to old age. They are not long lived like live oaks. Unfortunately, people have been having trouble reestablishing dogwoods around Tallahassee.
There are problems to which dogwoods succumb listed on the UF/IFAS website, such as dogwood anthracnose, which hasn’t been found in Florida yet, powdery mildew, and borers that enter damaged trunks. You may decide not to plant a dogwood, especially if you do not have an ideal site for one.
However if you decide to plant one, select a spot with deep, rich, well-drained soil. Light shade is better than heavy shade. Ideally your dogwood should receive sun in the morning and protection from hot afternoon sun.
There should be lots of leaf mulch around your planted dogwood. This will provide a natural source of fertilizer and will make it unnecessary for mowers and weed whackers to cut in close, thus avoiding trunk wounds. As the tree grows, don’t plant much beneath it; try not to disturb its roots. The leaf mulch will help keep the roots cool and conserve moisture.
Drought will stress your dogwood. Pay attention to watering, especially for the first year and during extended droughts. Water when rainfall is inconsistent and apply a layer of pine straw, if leaf mulch is not available.
If your soil is just not up to par, you will probably fail with a flowering dogwood tree. Instead try a different species. Other native spring bloomers to consider are red buckeye, fringe tree, Chickasaw plum, redbud, silverbell, parsley hawthorn, and crabapple. But if you’ve got the right soil, I would encourage you to try a dogwood. I plan to plant one this week to replace an old one that has reached the end of its life. I will miss this old tree!