When to Plant Spinach in Rolla, North Dakota (58367)
Location
Rolla, North Dakota
ZIP Code
58367
USDA Zone
3b
Last Frost
Wednesday, May 20, 2026
📅 Planting Calendar
Direct Sow Outdoors Wednesday, April 8, 2026
Pro Tip: Spinach can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Cynara scolymus
Days to Maturity 40 days
Mature Height 6-12"
Spread 6"
Type Leaf
Fruit Size N/A
☀️ Growing Requirements
☀️
Sun
Partial Shade to Full Sun
💧
Water
Regular (keep moist)
↔️
Spacing
6" apart
🌱
Planting Depth
0.5" deep
Seeds typically germinate in 7-14 days
🤝 Good Companions
StrawberryPeaBeanBrassicas
Other Plants for Rolla
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 Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini
Growing Spinach in Zone 3b
Spinach (Cynara scolymus) is a popular garden vegetable. In Rolla, North Dakota, which is in USDA Hardiness Zone 3b, you should direct sow seeds around Wednesday, April 8, 2026.
Your average last frost date is Wednesday, May 20, 2026. Spinach grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.