When to Plant Zucchini in Iron, Minnesota (55751)
Location
Iron, Minnesota
ZIP Code
55751
USDA Zone
3b
Last Frost
Wednesday, May 20, 2026
📅 Planting Calendar
Start Seeds Indoors Wednesday, April 22, 2026
Transplant Outdoors Wednesday, June 3, 2026
Pro Tip: Start Zucchini seeds indoors 4 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Cucurbita pepo
Days to Maturity 50 days
Mature Height 24-36"
Spread 48"
Type Bush
Fruit Size Medium (6-8 inches)
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Regular (1-2 inches/week)
↔️
Spacing
36" apart
🌱
Planting Depth
1" deep
Seeds typically germinate in 7-14 days
🤝 Good Companions
CornBeansNasturtiumMarigold
⚠️ Avoid Planting Near
Potato
Other Plants for Iron
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 Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon
Growing Zucchini in Zone 3b
Zucchini (Cucurbita pepo) is a popular garden vegetable. In Iron, Minnesota, which is in USDA Hardiness Zone 3b, you should start seeds indoors around Wednesday, April 22, 2026.
Your average last frost date is Wednesday, May 20, 2026. Plan to transplant your Zucchini seedlings outdoors around Wednesday, June 3, 2026, about 2 weeks after your last frost date.