Fall Gardening

September

fall gardening in alachua county

understanding the northeast florida climate


Fall is a fantastic time for gardening in Alachua County. As the summer heat begins to wane, Northeast Florida gardeners have a unique opportunity to start their fall gardens. The mild fall temperatures and extended growing season make this an ideal time to cultivate a variety of cool-season crops. Whether you’re a seasoned gardener or a beginner you can take full advantage of our unique growing conditions and enjoy a bountiful fall and winter harvest.

preparing your garden for fall planting


Before you start planting, it’s essential to prepare your garden beds. Most of Alachua County has sandy soil which often requires amendments to improve fertility and water retention. Start by testing your soil using a soil test kit or by sending a sample to the UF/IFAS Extension Soil Testing Laboratory. Based on the results, you can add soil amendments, such as compost, to enrich the soil. A pH level between 6.0 and 7.0 is ideal for most fall vegetables.

choosing the right crops


Selecting cool season crops for your fall garden can extend the gardening season. Cool season crops thrive in cooler temperatures, typically between 55°F and 75°F, and they are more tolerant of light frosts. These crops are planted in fall or early spring and are typically harvested before the onset of hot summer temperatures. Popular crops to grow in Alachua County in the fall include lettuce, mustard greens, onions, and strawberries, highlighted below, along with kale, broccoli, collards, cilantro, and parsley.

lettuce



Lettuce (Lactuca sativa) is a fast-growing, cool-season crop that thrives in the mild fall temperatures in Alachua County. Varieties like 'Butterhead,' 'Romaine,' and 'Leaf' are well-suited for our climate. Local lettuce cultivars include Grandpa Admires, Key Lime, Stem Lettuce, Queensland, and Magenta.

mustard greens



Mustard greens (Brassica rapa) are another excellent choice for fall gardening. They are fast-growing and can be harvested multiple times. Cultivars that grow well in Alachua County include 'Chijimisai', 'Feaster Mustard', 'Hon Tsai Tai', Turnip Greens. Bok Choy, a popular Asian leafy green, is also well-suited to Northeast Florida. Mustard greens can tolerate light frost.


onions



Onions (Allium cepa) can be grown from seeds, sets, or transplants. They require a longer growing season, making fall the perfect time to start them. For the fall season, select short-day onions that need only 10-12 hours of daylight to start forming bulbs. Popular short-day varieties include ‘Granex’, ‘Texas Super Sweet’, and ‘Red Creole’.

strawberries



Strawberries (Fragaria x ananassa) are a delightful addition to any garden and can be planted in the fall for a spring harvest. Strawberries will begin to produce fruit in late winter or early spring. Varieties like ‘Camarosa’, 'Festival' and 'Sweet Charlie' are recommended for the Northeast region.


mulching and watering

Mulching is particularly important in the fall. It helps retain moisture, suppress weeds, and regulate soil temperature. Water your plants in the morning to reduce the risk of fungal diseases and aim to keep the soil consistently moist but not waterlogged.

pests and diseases

While fall gardening generally faces fewer pest problems than its warmer counterpart, it’s still important to be vigilant. Aphids, caterpillars, and slugs are common pests that can affect lettuce and mustard greens. Use Integrated Pest Management (IPM) strategies, such as hand-picking pests, using row covers, encouraging beneficial insects, and applying pesticides only when necessary.

Onions and strawberries are prone to fungal diseases, particularly in humid conditions. Practice good watering techniques such as minimizing overhead watering, ensuring good air circulation, and removing any diseased plant material promptly.

References

Brown, S.P., Treadwell, D., Stephens, J.M., and Webb, S. (2021). Florida Vegetable Gardening Guide. (#SP103). Retrieved 08/23/2024 from https://edis.ifas.ufl.edu/publication/VH021.

Cool-Season Vegetables. UF/IFAS Extension Gardening Solutions. Retrieved 08/23/2024 from https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/cool-season-vegetables/.

Five fall vegetables for the home garden. UF/IFAS Extension Gardening Solutions. Retrieved 08/23/2024 from https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/five-fall-vegetables/.

Jameson, M. (2024). Understanding Short-Day vs. Long-Day Onions. Morning AgClips. Retrieved 08/23/2024 from https://www.morningagclips.com/understanding-short-day-vs-long-day-onions/.

Lettuce. UF/IFAS Extension Gardening Solutions. Retrieved 08/23/2024 from https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/lettuce/.

Liu, H. and Liu, G. (2023). Bok Choy, an Asian leafy green vegetable emerging in Florida (#HS1337). Retrieved 08/23/2024 from https://edis.ifas.ufl.edu/publication/HS1337.

Onions and Shallots. UF/IFAS Extension Gardening Solutions. Retrieved 08/23/2024 from https://gardeningsolutions.ifas.ufl.edu/plants/edibles/vegetables/onions-and-shallots/.

Strawberries. UF/IFAS Extension Gardening Solutions. Retrieved 08/23/2024 from https://gardeningsolutions.ifas.ufl.edu/plants/edibles/fruits/strawberries/.

Whitaker, V.M., Peres, N.A., Sriyanka, L., Brown, S.P., and Chandler, C.K. (2021). Growing Strawberries in the Florida Home Garden (#HS1154). Retrieved 08/23/2024 from https://edis.ifas.ufl.edu/publication/HS403.

 

Authored by:  Dr. Cynthia Nazario-Leary, Environmental Horticulture Agent and Master Gardener Volunteer Coordinator, UF/IFAS Extension Alachua County.

Photo credits: UF/IFAS