"The health of a plant depends not only on genetics, but also on environmental conditions and the care it receives." (Southern Living Garden Problem Solver)

Three elements are required for the spread of bacteria, fungi, and viruses; the biological pathogen, a favorable environment, and a susceptible plant. If you remove any one of these elements the disease will not be present.

Favorable Environment:
Eliminate this factor by creating an unfavorable environment. Diseases love wet to moist areas with little air circulation and lush young growth.

1. Space plants apart enough to allow for good air circulation.
2. Don't water late in the day, especially from overhead.
3. Improve soil drainage to prevent root rots.
4. Don't over-fertilize, especially with nitrogen.

Susceptible Host (Plant):
Some plants' genetic makeup will make them more resistant to certain diseases. When planning a garden select improved varieties that are disease resistant.

Pathogen:
Prevent the pathogen from being introduced into the garden by thoroughly examining plants before purchasing them. It is a good idea to gently remove the plant from its pot and inspect the root system as well. The fibrous roots should be white. Do not buy plants with brown, mushy roots. Also, prevent the spread of disease by keeping your garden tools clean and disinfected.

| List of Diseases | Controlling Existing Pathogenic Diseases |