Zone 8 Planting Guide
Complete 2026 seed starting calendar for Zone 8a and Zone 8b
Published July 29, 2025
Zone 8 covers the Pacific Northwest coast, much of Texas, Georgia, Alabama, South Carolina, and parts of the Pacific Coast. With a 280–300+ day growing season, the main challenge for Zone 8 gardeners shifts from cold to summer heat. Smart Zone 8 gardeners use spring AND fall as their two peak growing seasons, taking a brief midsummer pause for the most heat-sensitive crops.
Zone 8 Growing Strategy
🏠 Spring Season (Main)
Start peppers and eggplant indoors in November–December. Transplant tomatoes, peppers, and warm-season crops to the garden in February–March. Harvest summer crops June–August.
🍂 Fall Season (Second Spring)
This is Zone 8's secret weapon. Replant tomatoes in July for a fall harvest. Sow broccoli, cauliflower, kale, and carrots in August for a September–December harvest that is often better than spring.
❄️ Winter Growing
Zone 8 winters are mild enough for cold-hardy greens. Kale, spinach, chard, and lettuce survive through winter with minimal protection. Row covers extend production further.
Managing Summer Heat in Zone 8
Summer heat is the biggest challenge for Zone 8 gardeners. When temperatures regularly top 95°F, many crops stop producing or bolt to seed. Here is how to keep your garden productive through the hottest months:
☂️ Use Shade Cloth
Install 30–50% shade cloth over tomatoes, peppers, and leafy greens when temperatures exceed 90°F. Shade cloth reduces leaf temperature by 10°F, prevents sunscald on fruit, and keeps lettuce and spinach from bolting. Drape it over hoops or attach it to a simple PVC frame above your beds.
💧 Water Deeply and Early
In Zone 8's summer heat, water evaporates quickly. Water deeply at the base of plants early in the morning (before 8 a.m.) to minimize evaporation loss. Drip irrigation is far more efficient than overhead sprinklers. Aim for 1–2 inches of water per week, increasing to 2–3 inches during heat waves.
🌶️ Choose Heat-Tolerant Varieties
Not all vegetables handle Zone 8 summers equally. Select heat-tolerant tomato varieties like Heatmaster, Florida 91, and Phoenix. For peppers, go with Anaheim, Cubanelle, or Thai Dragon — they thrive in high heat. Okra, sweet potatoes, and southern peas are practically heat-proof and produce abundantly when other crops struggle.
🌱 Mulch Heavily
Apply a 3–4 inch layer of organic mulch (straw, shredded leaves, or grass clippings) around your plants. Mulch keeps soil temperatures 10–15°F cooler, retains moisture, and suppresses heat-stressed weeds. Replenish mulch mid-summer as it breaks down.