Residential Lawn & Garden

Gardening Almanac


What to Plant in September


Annuals: Ageratum, Alyssum, Celosia, Come, Coleus, Cosmos, Azania, Gomphrena, Impatiens, Marigold, Nicotiana, Ornamental Pepper, Periwinkle/Vinca, Portulaca, Salvia, Sunflower, Torenia, Wax Begonia, Vinca, Zinnia.


Beans, Broccoli, Cabbage, Celery, Collards, Corn, Cucumbers, Eggplant Endive/Escarole, English Peas, Kale, Lettuce, Mustard, Onions (green and bulbing), Pepper, Radish, Southern Peas, Strawberries, Summer Squash, Tomatoes, Turnips.

Herbs and Spices

(From plants, not seeds) Basil, Borage, Chervil, Coriander/Cilantro, Fennel, Mint, Rosemary.


African Lily, Amaryllis, Aztec Lily, Blackberry Lily, Canna, Cestrum, Crinum, Crocosmia, Elephant Ears, Gladiolus, Kaffir Lily, Lilies, Louisiana Iris, Moraea, Narcissus, Rain Lilies, Society Garlic, Spider Lily, Watsonia.

What to Do in September

For more details on the following, call your local Extension office or visit the University of Florida’s publication website: 

Plant and fertilize annuals. (See January)

Spray roses to prevent black spot. (See March)

Fertilize perennials. (See March)

Watch for lace bug infestations. (See March)

Check for signs of turf insects; treat if necessary. (See April)

Fertilize outdoor potted plants. (See April)

Correct yellowing in palms. (See August)

Groom roses to enhance fall bloom. (See August)

Plant a vegetable garden. Seeds or transplants of the vegetables listed above should be planted now. Sow seed no deeper than twice its diameter. Select varieties recommended for Florida’s conditions.

Watch for infestations of worms in lawns. Sod webworms, armyworms, or grass loopers can damage all types of turfgrass. Damage appears in patches. Injured grass has notches chewed along the sides of the grass blades.

Inspect your sprinkler system. Check for broken, clogged or misdirected sprinklers. Make necessary repairs and adjustments in preparation for the fall dry season.

Divide herbaceous perennials and bulbs. Amaryllis, Cannas, Daylilies, Shastas, and other perennials can be lifted, divided and reset now. Prepare new beds with liberal amounts of organic matter. Space plants to provide for future growth.

Prepare strawberry beds for planting. Strawberry plants are treated as an annual in Florida and are best grown in raised beds covered with black plastic. Beds should be 6 to 8 inches high and 24 inches wide. Mix 2½ pounds of 6-8-8 fertilizer (ones that contain slow release nitrogen are best), per 100 square-feet of bed. Additional fertilizer should be banded 6 inches deep, down the center of the bed, at a rate of 1 pound per 25 linear feet.

Prune cold-sensitive plants. Hedges and ornamental plants which are susceptible to cold damage should be given a final pruning so new growth can mature and harden off by winter.


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