When to Plant Basil in Santa Rosa, California (95409)
Location
Santa Rosa, California
ZIP Code
95409
USDA Zone
9b
Last Frost
Wednesday, February 10, 2027
📅 Planting Calendar
Start Seeds Indoors Wednesday, December 16, 2026
Transplant Outdoors Wednesday, February 24, 2027
Pro Tip: Start Basil seeds indoors 8 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Ocimum basilicum
Days to Maturity 60 days
Mature Height 12-24"
Spread 12"
Type Bush
Fruit Size N/A
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Regular (keep moist)
↔️
Spacing
12" apart
🌱
Planting Depth
0.25" deep
Seeds typically germinate in 5-10 days
🤝 Good Companions
TomatoPepperOreganoAsparagus
⚠️ Avoid Planting Near
RueSage
Other Plants for Santa Rosa
Blackberry Blueberry Raspberry Strawberry Chamomile Chives Cilantro Dill Lavender Lemon Balm Marjoram Mint Oregano Parsley Rosemary Sage Tarragon Thyme Acorn Squash Artichoke Arugula Asparagus Beefsteak Tomato Beet Bell Pepper Bok Choy Broccoli Brussel Sprout Butternut Squash Cabbage Cantaloupe Carrot Cauliflower Cayenne Pepper Celery Cherry Tomato Chili Pepper Collard Green Common Bean Cucumber Eggplant Endive Fennel Garlic Grape Tomato Green Bean Habanero Pepper Head Lettuce Heirloom Tomato Honeydew Melon Jalapeño Pepper Kale Kohlrabi Leaf Lettuce Leek Lima Bean Mustard Okra Onion Parsnip Pea Poblano Pepper Pole Pea Potato Pumpkin Radicchio Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini
Growing Basil in Zone 9b
Basil (Ocimum basilicum) is a popular garden vegetable. In Santa Rosa, California, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Wednesday, December 16, 2026.
Your average last frost date is Wednesday, February 10, 2027. Plan to transplant your Basil seedlings outdoors around Wednesday, February 24, 2027, about 2 weeks after your last frost date.