The right kind of dirt!
Florida Friendly Fertilizers in Compliance with Local Fertilizer Ordinances
Organic fertilizers, soil conditioners and soil additives are also available:
Bone meal: another byproduct of the meat-packing industry, bone meal contains calcium and phosphorous, essential elements for plant growth.
Blood meal: a byproduct of the meat-packing industry. Steamed and dried, it's high in phosphorous.
Fish emulsion: a fish-processing byproduct. Mild, nontoxic and organic, fish emulsion is good for tender plants that may suffer fertilizer burn.
Compost: one of the best all-around garden materials for soil improvement.
Composted manure: for soil conditioning or use in the compost pile.
Peat moss: an amendment that aerates and lightens heavier soils such as clay. It adds mass to sandy soils to reduce the leaching of nutrients.
For leafy plants, use a fertilizer with a higher nitrogen content (first number)
For flowering or fruiting plants, use a fertilizer higher in phosphorous content (middle number)
If using a water-soluble fertilizer: Mix as directed on container according to directions, wet the leaves and drench the soil.
If using a granulated fertilizer: Scatter a small amount of all-purpose fertilizer lightly under plants from the stem to beyond outer spread of branches or foliage. Water slowly and deeply
NOTE: Never over fertilize! You will see lots of weak, leafy growth and few flowers