When to Plant Squash in Dubuque, Iowa (52003)
Location
Dubuque, Iowa
ZIP Code
52003
USDA Zone
5a
Last Frost
Sunday, May 10, 2026
📅 Planting Calendar
Direct Sow Outdoors Sunday, March 29, 2026
Pro Tip: Squash can be directly sown outdoors. Plant 6 weeks before your last frost date.
🌿 Plant Details
Scientific Name Cucurbita moschata
Days to Maturity 90 days
Mature Height 24-36"
Spread 72"
Type Vine
Fruit Size Large (2-5 lbs)
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Regular (1 inch/week)
↔️
Spacing
48" apart
🌱
Planting Depth
1" deep
Seeds typically germinate in 7-14 days
🤝 Good Companions
CornBeanRadishMarigold
⚠️ Avoid Planting Near
Potato
Other Plants for Dubuque
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 Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini
Growing Squash in Zone 5a
Squash (Cucurbita moschata) is a popular garden vegetable. In Dubuque, Iowa, which is in USDA Hardiness Zone 5a, you should direct sow seeds around Sunday, March 29, 2026.
Your average last frost date is Sunday, May 10, 2026. Squash grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.