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Zone 9 Planting Guide

Complete 2026 planting calendar for Zone 9a and Zone 9b

Published September 2, 2025

Zone 9 covers coastal California, the San Francisco Bay Area, most of Arizona, Southern Texas, and parts of Florida and Louisiana. With a frost-free season of 319–334 days, Zone 9 gardeners have the luxury — and the challenge — of managing a nearly year-round garden. The focus shifts from battling cold to managing intense summer heat.

Zone 9a

Last Frost: 01/30

Season: 319 days

Full Zone 9a Calendar →

Zone 9b

Last Frost: 01/20

Season: 334 days

Full Zone 9b Calendar →

Zone 9 Year-Round Growing Strategy

🌸 Spring (Feb–May)

Start tomatoes and peppers outdoors in January–February. Plant warm-season crops as early as February. This is your primary tomato and pepper harvest season — finish before June heat arrives.

☀️ Summer (Jun–Sep)

Focus on heat-tolerant crops: okra, sweet potato, eggplant, southern peas, basil, and melons. Many cool-season crops will bolt or fail in summer. Use shade cloth (30%) to extend other crops.

🍂 Fall (Aug–Nov) — Second Spring

Zone 9's secret season. Plant tomatoes again in mid-August for a November harvest. Sow broccoli, cauliflower, carrots, and kale in August for a fall/winter harvest.

❄️ Winter (Dec–Feb) — Cool Season

Grow cool-season crops through winter with no protection needed in most years: lettuce, spinach, arugula, kale, broccoli, beets, carrots, and peas all thrive in Zone 9 winters.

Zone 9 Calculator

Zone 9 FAQs

What is the last frost date in Zone 9?
Zone 9a averages its last frost around January 30th, and Zone 9b around January 20th. Many years, Zone 9 is completely frost-free after Christmas.
Can Zone 9 garden year-round?
Essentially yes. Zone 9 supports near year-round vegetable production. The key is knowing which crops to grow in each season: heat-tolerant crops in summer, cool-season crops in fall and winter.
When do you plant tomatoes in Zone 9?
In Zone 9, plant tomatoes outdoors in late January or early February for a spring crop. For a fall harvest, replant in mid-August and harvest from October through December.
What vegetables grow in Zone 9 in summer?
Zone 9 summers are ideal for okra, sweet potato, eggplant, pepper, melon, basil, and heat-tolerant tomato varieties. Many cool-season crops struggle in Zone 9 summers due to extreme heat.