USDA Zone 8 Planting Guide: Gardening in Warm Climates
Zone 8 offers a 200-240 day growing season with mild winters, allowing year-round gardening. Cool-season crops thrive from fall through spring (October-May), while warm-season crops produce from April through October. Heat-tolerant varieties are essential for summer, and many gardeners take a summer break during the hottest weeks.
| Vegetable | When to Plant | Notes |
|---|---|---|
| Tomatoes | First crop: March transplants; Second crop: July transplants for fall | May need afternoon shade in hottest areas. Heat-set varieties produce through summer heat |
| Peppers | March transplants; can produce until first frost in November | Peppers love Zone 8 heat. Extremely long production season from one planting |
| Sweet Potatoes | Plant slips April-May; harvest before frost | Thrives in Zone 8 heat. Excellent staple crop with high yields |
| Okra | Direct sow April-June when soil is warm | Truly thrives in Zone 8 summer heat. Can harvest daily at peak production |
| Southern Peas | Direct sow April-August | Heat-tolerant protein crop that actually prefers hot weather |
| Greens (Collards, Kale) | Fall crop: August-September; Spring crop: February-March | Excellent fall-winter-spring crops. May survive and produce all winter |
Plant in October for spring harvest
Fall planting essential in Zone 8. Choose heat-tolerant varieties
Plant bare-root in December-February
Extremely productive in Zone 8. Many varieties work well including Apache and Natchez
Plant in late winter while dormant
Very well-suited to Zone 8. Many varieties are reliably hardy and highly productive
Plant in fall or spring; year-round evergreen
Reliably perennial in Zone 8. Can grow to large shrub size
Plant in spring after last frost
More heat-tolerant than common oregano. May be perennial in Zone 8b
Plant in spring; grows as evergreen tree/shrub
Perennial in Zone 8. Can grow into large specimen with beautiful fragrant leaves
Extreme Summer Heat
Take a summer gardening break in July-August for some crops. Use shade cloth, mulch heavily, and water early morning. Grow heat-tolerant varieties.
Tomatoes Failing to Set Fruit in Heat
Plant heat-set tomato varieties (Phoenix, Solar Fire, Heatmaster). Provide afternoon shade. Plant early crop and fall crop, avoiding peak summer.
Pest and Disease Pressure
Long warm season increases pest problems. Practice strict crop rotation, use row covers, and monitor plants weekly. Remove infested material immediately.
Bolting Cool-Season Crops
Plant cool-season crops for fall-winter-spring harvest. Use bolt-resistant varieties. Provide shade and keep soil cool with mulch for spring crops.
January
- •Harvest winter greens and root vegetables
- •Start tomato and pepper seeds indoors
- •Prune fruit trees and roses
- •Apply dormant spray to fruit trees
February
- •Direct sow peas, lettuce, and spinach
- •Plant potatoes
- •Transplant onion sets and seedlings
- •Plant bare-root fruit trees
March
- •Transplant tomatoes and peppers
- •Direct sow beans and corn (late March)
- •Harvest spring greens
- •Begin regular fertilizing schedule
April
- •Plant sweet potato slips
- •Direct sow squash, cucumbers, and melons
- •Plant okra and southern peas
- •Mulch heavily
May
- •Continue planting warm-season crops
- •Harvest spring vegetables
- •Begin summer watering schedule
- •Watch for pest problems
June
- •Harvest summer vegetables
- •Consider summer garden break for struggling crops
- •Water deeply in morning
- •Start fall tomato and pepper seeds indoors
July
- •Transplant fall tomatoes and peppers
- •Plant southern peas
- •Minimal planting - focus on maintenance
- •Water consistently
August
- •Direct sow fall beans
- •Start fall brassicas from seed
- •Plant fall squash
- •Prepare fall garden beds
September
- •Transplant fall brassicas
- •Direct sow fall lettuce and spinach
- •Plant fall peas
- •Begin fall harvests
October
- •Plant garlic
- •Plant strawberries for spring harvest
- •Continue planting greens
- •Harvest fall vegetables
November
- •Finish garlic planting
- •Continue harvesting cold-hardy crops
- •Plant cover crops in empty beds
- •Mulch perennials for winter
December
- •Harvest winter greens
- •Plan and order seeds for spring
- •Minimal active gardening
- •Enjoy stored harvest
- Think of Zone 8 as having two growing seasons: cool season (October-May) and warm season (April-October)
- Many gardeners take a break from intensive gardening during July-August heat
- Fall gardening is often more successful than spring - cooler temps mean fewer pests and less water stress
- Grow heat-tolerant varieties of typically cool-season crops (heat-tolerant lettuce, etc.)
- Consider growing perennial vegetables: asparagus, artichokes, chayote, walking onions
- Experiment with subtropical crops: figs, pomegranates, citrus in protected spots
Can I grow tomatoes year-round in Zone 8?
Not quite year-round, but close. Plant spring tomatoes in March and fall tomatoes in July for harvest from late May through Thanksgiving in a typical year. The gap is during the hottest summer weeks when even heat-set varieties struggle.
When should I plant garlic in Zone 8?
Plant garlic cloves in October through early November. Earlier planting gives more time for root development before winter. Harvest the following June when lower leaves brown.
Can I grow citrus in Zone 8?
Some citrus grows in Zone 8b, especially Satsuma mandarins, kumquats, and Meyer lemons in protected locations. Zone 8a is borderline - grow citrus in containers that can be protected during cold snaps.
Why do my tomatoes stop producing in summer?
Tomatoes stop setting fruit when night temperatures stay above 75°F or day temperatures exceed 95°F. Pollen becomes non-viable. Plant heat-set varieties and provide afternoon shade, or take a summer break and plant fall tomatoes in July.