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Cool-season vegetables, zone by zone
Warm days and cooler nights make October one of the best growing months in the region. Planting windows still vary a lot from the mountains to the Gulf, so check a state calendar such as UGA Extension's vegetable garden calendar for your area.
- Zones 6b–7b (mountains, upper Piedmont, Tennessee, Virginia): the transplanting window for broccoli, cabbage and collards is closing. Keep sowing fast crops such as radishes, spinach, lettuce and mustard early in the month, and protect them with row cover once frosts begin.
- Zones 8a–8b (Piedmont to coastal plain): this is the main month for the cool-season garden. Transplant broccoli, cabbage, cauliflower, collards and kale, and sow turnips, carrots, beets, radishes, lettuce, spinach and other greens every couple of weeks for a steady harvest.
- Zone 9 (Gulf Coast, north and central Florida): the full range of cool-season crops goes in now, and planting carries on into winter. LSU AgCenter treats fall as the main cool-season vegetable season along the Gulf.
- Zones 9b–10 (south Florida): per the UF/IFAS Florida Vegetable Gardening Guide, fall and winter are south Florida's prime growing season. Tomatoes, peppers and many other warm-season crops go in alongside the cool-season ones.
Pick up fall tomatoes, peppers and okra as they ripen. In the upper zones, plan to pick any mature green tomatoes before the first frost.
Care for the young fall garden:
- Water: fall transplants have small root systems. Water deeply once or twice a week when rain falls short, rather than a little every day.
- Mulch: once seedlings are a few inches tall, mulch with straw or shredded leaves to hold moisture and keep soil off the leaves.
- Caterpillars: cabbage loopers and imported cabbageworms are active on broccoli, cabbage and collards through fall. Check the undersides of leaves. Bt (Bacillus thuringiensis) sprays control young caterpillars without harming beneficial insects. Row cover keeps the moths from laying eggs in the first place.
- Aphids: look for them in the centers of brassica and greens plants. A strong spray of water or insecticidal soap knocks them back, and lady beetles often clean up the rest.
Garlic and onions
Garlic goes in from late October through November in zones 7b–8. Softneck types are generally the better fit for the mild winters of zones 8–9. NC State Extension's guide to growing garlic in the South covers choosing varieties and spacing the cloves. Plant the largest cloves pointed end up in loose, well-drained soil that has had compost worked in, then mulch with straw.
Short-day onions are the right type for this region. Long-day varieties planted in fall don't bulb properly this far south. If you sowed onion seed in September, keep the seedbed weeded and evenly moist. Transplants are set out later in winter (see the January and February guides).
Luster Leaf Rapitest soil test kit
A home kit is fine for a quick pH spot-check between the fall lab tests Clemson recommends. Base lime and fertilizer rates on the lab report. See how we chose it.
Lawns: let warm-season grass go dormant
Bermudagrass, zoysia, centipede and St. Augustine slow down as the soil cools and turn brown after the first hard frosts. Don't fertilize them now. Clemson HGIC's winterizing-lawns fact sheet warns against the high-nitrogen "winterizer" products sold in fall for warm-season grasses. Late nitrogen pushes tender growth that is more likely to suffer winter injury and disease. If a soil test shows potassium is low, that is the nutrient to correct, at the rate the test recommends. The September guide gives the cutoff for the last warm-season feeding.
- Winter weeds: annual bluegrass, henbit and chickweed germinate as nights cool. Clemson HGIC and UGA Extension both time the fall preemergence herbicide to the first stretch of cooler nights. In much of the region that window is closing by October, so apply soon if you haven't already. Read the label, because several products can't be used on newly seeded lawns.
- Ryegrass overseeding (optional): some homeowners overseed dormant bermuda with ryegrass for winter color. Clemson HGIC explains the trade-off: the ryegrass competes with the bermuda as it greens up in spring. Skip it on lawns that are already thin or stressed.
- Tall fescue (zones 7–8a): October 15 is the last date for seeding in zone 8a (October 1 in zone 7b). NC State's tall fescue maintenance calendar schedules the fall feedings for September and November, so established fescue doesn't need a separate October feeding.
Plant trees, shrubs and perennials
Fall is the best time to plant woody plants in the Southeast. Roots keep growing in warm soil all winter, so new plants are better established by the following summer. Per Clemson HGIC, most of a plant's long-term success depends on its roots. Loosen or cut circling roots on container plants, set the root flare at or slightly above grade, and don't bury the trunk under soil or mulch.
- Water new plantings deeply whenever rain falls short. Fall dry spells are hard on plants that have only just been set out.
- Divide crowded perennials such as daylilies, hostas and ornamental grasses early in the month so they can root in before cold weather.
- Fall is also a good time to transplant shrubs you want to move. Dig as large a root ball as you can handle.
Pansies, violas and spring bulbs
Pansies and violas are the classic Southeast winter bedding plants. Clemson HGIC recommends planting them in fall, once the soil has cooled, so they root in before winter. Plants set out into hot soil tend to stretch and rot. In the upper zones, plant early enough for roots to establish before hard freezes. Near the coast, the window runs later.
Buy spring bulbs now while selection is good, but wait for the soil to cool before planting. Per Clemson HGIC's spring-flowering bulbs fact sheet, most bulbs go in from October through December. In zones 8–9, tulips and hyacinths need pre-chilling in the refrigerator before planting and are usually treated as annuals. Don't store bulbs next to ripening fruit, which gives off ethylene gas that can damage the flower inside the bulb. Daffodils are the most reliable bulb for coming back year after year across the region.
Soil testing and leaf management
Clemson Extension recommends soil testing in the fall. Labs are less busy, and lime needs months to react with the soil, so it has to go down well before spring planting. Sample lawn areas and garden beds separately, and follow the lab's lime and fertilizer recommendations instead of guessing.
Leaves start dropping late in the month in the upper zones. Per Alabama Extension, you can mulch them into the lawn with a mower, compost them, or use them as mulch on beds instead of bagging them. Don't let a thick, wet mat sit on the lawn, especially on tall fescue.
Hold off on pruning
October is not a pruning month. Per NC State Extension's general pruning techniques, cuts in late summer and fall can push tender growth that frost kills. Crape myrtles in particular should wait until late winter. Azaleas, camellias, forsythia and other spring bloomers already have next year's flower buds, so pruning now cuts off the spring show. For now, limit pruning to dead, diseased or broken wood.
Common mistakes
| Mistake | Consequence | Correct approach |
|---|---|---|
| Applying a high-nitrogen "winterizer" to bermuda, zoysia, centipede or St. Augustine | Tender late growth, more winter injury and disease | No nitrogen on dormant warm-season grass; correct potassium only if a soil test calls for it |
| Skipping the fall preemergence | Annual bluegrass and henbit take over dormant lawns by late winter | Apply as nights cool in early fall, following the label |
| Planting pansies into hot soil | Stretched, rotting plants that never fill in | Plant once soil has cooled; earlier in the upper zones, later near the coast |
| Planting unchilled tulips in zones 8–9 | Short stems and weak or no flowers | Pre-chill in the refrigerator, away from fruit, before planting |
| Pruning shrubs and crape myrtles in fall | Frost-damaged regrowth and lost spring flowers | Wait until late winter or until after spring bloom |
Frequently asked
Can I still plant broccoli in October in the Southeast?
In zones 8–9, yes. October is still prime time for broccoli, cabbage and collard transplants, and Gulf Coast and Florida gardeners plant into winter. In zones 6b–7b the window is closing, so use transplants, not seed, and choose faster-maturing varieties.
Should I fertilize my centipede lawn before winter?
No. Clemson HGIC advises against fall nitrogen on warm-season grasses, and centipede is especially sensitive to over-fertilization. If a soil test shows low potassium, apply only what the test recommends.
Is October a good time to plant trees in the Southeast?
It is one of the best times. Roots grow through fall and winter while the tops are dormant. Set the root flare at grade, fix circling roots, mulch thinly, and water during dry spells.
When should I plant tulip bulbs in Georgia or South Carolina?
Clemson HGIC puts most bulb planting from October through December, once the soil has cooled. In zones 8–9, pre-chill tulips in the refrigerator first and plan to replace them each year.
Sources
- This Month in Your Garden – October 2026, Clemson HGIC
- Winterizing Lawns, Clemson HGIC
- Annual Bluegrass Control, Clemson HGIC
- Spring Flowering Bulbs, Clemson HGIC
- Vegetable Garden Calendar (C943), UGA Extension
- Florida Vegetable Gardening Guide (VH021), UF/IFAS Extension
- Growing Garlic in the South, NC State Extension
- Alabama Gardener's Calendar: October, Alabama Cooperative Extension System