What to plant in June – Zone 9
What to plant in June
Zone 9
Your complete guide to vegetables, flowers, herbs, and heat-lovers that thrive when temperatures soar in Northern California.
🌿 Zone 9 Seasonal Guide · June 2026
June in Zone 9 is a month of contrasts — the garden is lush and productive in the morning cool, then baking by afternoon. The secret to a thriving June garden isn’t fighting the heat; it’s planting with it. I’ve been gardening in Zone 9b for years, and June has taught me exactly which plants will soar and which will sulk. Here’s everything I’d put in the ground right now. 🌿
🍅 Vegetables to Plant Now
Heat-Tolerant Tomatoes
Early June is your last window for tomatoes — plant transplants now, not seeds. Choose heat-tolerant varieties that keep setting fruit when temps climb above 90°F.
Shop Tomato Seeds →Peppers & Chiles
Peppers are made for Zone 9 summers. They thrive in exactly the conditions that challenge other crops. Plant now, mulch well, and you’ll harvest through fall.
Shop Pepper Seeds →Sweet Corn
June is prime corn-planting time in Zone 9. Direct sow seeds 1 inch deep in blocks (not rows) for good pollination. With our long summers, you’ll harvest by August.
Shop Corn Seeds →Cucumbers & Squash
These vining crops love Zone 9 heat and will reward you with an abundance of fruit in just 50–60 days. Mulch heavily to retain moisture around the roots.
Shop Seeds →Zone 9 Summer Watering Rule
In June, water deeply 2–3x per week rather than daily shallow watering. Drip irrigation keeps roots cool and cuts water use by up to 50% compared to overhead sprinklers. It’s the single best upgrade for a Zone 9 summer garden.
🌸 Flowers to Plant in June
Zinnias
Zinnias are the queen of the June garden in Zone 9. Direct sow seeds after the last cool night and they’ll explode with color all the way through October. My absolute favorite summer cut flower.
Shop Zinnia Seeds →Marigolds
Marigolds are summer-garden workhorses in Zone 9 — deterring pests, attracting pollinators, and blooming brilliantly in full sun heat. Plant them near tomatoes and peppers for a double win.
Shop Marigold Seeds →Gaillardia (Blanket Flower)
Bold, jewel-toned, and virtually indestructible in Zone 9 heat. Plant blanket flower now and it will bloom all summer without complaint, even in the hottest spots in your garden.
Shop Gaillardia →Salvia
Salvias are made for Zone 9 — drought-tolerant, heat-loving, and irresistible to hummingbirds and bees. I have them throughout my garden and they are never without visitors.
Shop Salvia →🌿 Herbs to Sow in June
Basil
June is peak basil-planting time in Zone 9. It loves heat, hates cold, and grows explosively in our warm summers. Sow seeds directly and you’ll be harvesting in 3–4 weeks.
Shop Basil Seeds →Rosemary & Thyme
Mediterranean herbs are perfectly suited to Zone 9 summers — they thrive in exactly the heat that wilts other plants. Start from transplants for faster establishment.
Shop Herb Plants →🛒 June Garden Must-Haves
📋 Grab Your Zone 9 June Planting Guide
I’ve put everything in one beautiful printable — a full planting calendar, spacing chart, and watering guide for Zone 9b. Perfect to post in your potting shed or garden notebook!
“In June, the garden gives back everything you’ve put into it — and then some.”
What are you planting in your Zone 9 garden this June? I’d love to hear in the comments below! 🌿
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