When to Plant Radish in Mill Valley, California (94941)
Location
Mill Valley, California
ZIP Code
94941
USDA Zone
10a
Last Frost
Monday, January 25, 2027
📅 Planting Calendar
Direct Sow Outdoors Monday, December 14, 2026
Pro Tip: Radish can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Rhaphanus sativus
Days to Maturity 25 days
Mature Height 6-12"
Spread 3"
Type Root
Fruit Size Small (1-2 inches)
☀️ Growing Requirements
☀️
Sun
Full Sun to Partial Shade
💧
Water
Regular (keep moist)
↔️
Spacing
2" apart
🌱
Planting Depth
0.5" deep
Seeds typically germinate in 3-7 days
🤝 Good Companions
CarrotLettucePeaCucumberSpinach
⚠️ Avoid Planting Near
Hyssop
Other Plants for Mill Valley
Blackberry Blueberry Raspberry Strawberry Basil 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 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 Radish in Zone 10a
Radish (Rhaphanus sativus) is a popular garden vegetable. In Mill Valley, California, which is in USDA Hardiness Zone 10a, you should direct sow seeds around Monday, December 14, 2026.
Your average last frost date is Monday, January 25, 2027. Radish grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.