Zone 8b Gardening Guide
Everything you need to grow a thriving garden in USDA Hardiness Zone 8b — Gulf Coast / Pacific Northwest. Frost dates, planting calendar, and the best plants for your climate.
🌱 Get a personalized Zone 8b plan → Free trialWhat Is Zone 8b?
USDA Hardiness Zone 8b covers Gulf Coast / Pacific Northwest, including cities like Savannah, GA · Houston, TX · Seattle, WA. The zone experiences minimum winter temperatures between 15 to 20°F, which determines which perennials and woody plants survive winter outdoors.
With a growing season of 273 days, Zone 8b gardeners enjoy one of the longest growing seasons in North America. The key is aligning your planting schedule with the frost window.
Pro tip: Your exact ZIP code matters. Zone 8b spans a range of microclimates — elevation, urban heat islands, and proximity to water can shift your personal frost dates by 1–3 weeks. Cloche uses your ZIP to give you precise, location-specific recommendations.
Best Vegetables for Zone 8b
These vegetables thrive in Zone 8b's climate and growing season length:
| Vegetable | Start Seeds Indoors | Transplant Outside | Harvest Window |
|---|---|---|---|
| Tomatoes | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Peppers | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Okra | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Sweet Potatoes | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Collards | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Beans | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Eggplant | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
| Melons | Nov 15 – Dec 20 | Feb 25 – Mar 15 | Apr–Nov |
Top Plants This Season
Flowers for Zone 8b
These flowering plants are proven performers in Zone 8b:
- Lantana
- Bougainvillea
- Hibiscus
- Salvia
- Knockout Rose
- Gaillardia
Herbs for Zone 8b
Grow these herbs successfully in Zone 8b:
- Rosemary
- Basil
- Sage
- Thyme
- Mexican Oregano
- Epazote
- Lemongrass
Planting Calendar for Zone 8b
| Activity | When |
|---|---|
| Start seeds indoors | Nov 15 – Dec 20 |
| Transplant warm-season crops | Feb 25 – Mar 15 |
| Direct sow warm-season crops | Feb 25 – Mar 15 |
| Harvest window | Apr–Nov |
| Last frost (average) | Feb 25 |
| First fall frost (average) | Nov 25 |
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Your Zone 8b Garden, Personalized
Cloche builds a weekly care plan tailored to your exact ZIP code, your plants, and your soil — not just your zone. Frost alerts, seed-to-harvest tracking, AI chat. 7-day free trial.
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