Subtropical

What Can Grow in Zone 10a

Subtropical climate. Frost nearly non-existent. Tropical fruits become possible. Summer heat and rain drive growing calendar.

Zone 10a has average winter lows of 30°F to 35°F (-1°C to 2°C). You can grow tomatoes, peppers, eggplant, and many more plants. The frost-free growing season lasts about 300 days.

30°FWinter Low
35°FWinter High
300 daysFrost-Free
January 1Last Frost
December 15First Frost
🥕 Vegetables
tomatoes peppers eggplant okra sweet potatoes watermelon beans squash
🍎 Fruits
avocados citrus mangoes papayas guava bananas lychee starfruit
🌿 Herbs
basil rosemary thyme oregano lemongrass cilantro epazote curry leaf
🌸 Flowers
bougainvillea hibiscus bird of paradise plumeria ixora heliconia
🌳 Trees & Shrubs
royal palm coconut palm live oak ficus sea grape gumbo limbo
💡 Planting Tips

Grow heat-tolerant varieties in summer. Take summer break for cool crops — plant again in October. Protect from rare cold snaps.

🌱
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📍 States in Zone 10a
CaliforniaArizonaFloridaHawaiiTexas
🔀 Neighboring Zones
9b10b

Frequently Asked Questions

USDA Zone 10a has average annual minimum temperatures of 30°F to 35°F (-1°C to 2°C). This temperature range determines which perennial plants can survive winter outdoors.

The average last frost date in Zone 10a is around January 1, and the first fall frost typically arrives around December 15. This gives a frost-free growing season of approximately 300 days.

Zone 10a is well-suited for tomatoes, peppers, eggplant, okra, sweet potatoes, watermelon. Grow heat-tolerant varieties in summer. Take summer break for cool crops — plant again in October. Protect from rare cold snaps.

Fruits that thrive in Zone 10a include avocados, citrus, mangoes, papayas, guava, bananas. Always check that specific cultivars are hardy to your zone before planting perennial fruit trees and shrubs.