Spaghetti Squash

Spaghetti squash is a versatile and delicious vegetable, perfect for those seeking a healthy and low-carb alternative to traditional pasta. This guide will provide detailed instructions on planting, growing, harvesting, and storing spaghetti squash to help you enjoy this fantastic vegetable all year round.

Days to Grow100-110 days
Square Foot Garden Spacing1 plant per 4-6 square feet
Gardening EffortModerate
When to PlantAfter last frost date
Yield4-5 squash per plant
Frost ToleranceNot frost-tolerant
Hours of Light NeededAt least 6 hours
Soil ConditionsWell-draining, pH 6.0-6.8
Days to Maturity100-110 days

Gardening Shortcut Links

Square Foot Gardening Section

Planting Spaghetti Squash: Best Practices

Choosing the Right Location

Spaghetti squash thrives in full sunlight and well-draining soil. Therefore, choose a location that receives at least six hours of sunlight per day and has rich, loamy soil with a pH between 6.0 and 6.8.

Preparing the Soil

Before planting, work organic matter, such as compost or well-rotted manure, into the soil to improve drainage and fertility. A layer of 2-4 inches of organic matter should be sufficient. Then, till the soil to a depth of 12 inches to ensure proper root development.

Sowing the Seeds

Spaghetti squash is a warm-season crop that requires soil temperatures of at least 60°F (15°C) for successful germination. Plant seeds directly outdoors after the last frost date, or start seeds indoors 3-4 weeks before transplanting. Sow seeds 1 inch deep, spacing them 3 feet apart within rows and allowing 4-6 feet between rows to accommodate the sprawling vines.

Growing Spaghetti Squash: Tips for Success

Watering and Fertilizing

Consistent moisture is crucial for successful spaghetti squash growth. Provide 1-2 inches of water per week through rainfall or supplemental irrigation. Avoid overhead watering to minimize the risk of fungal diseases.

Fertilize with a balanced, slow-release fertilizer at planting time, and side-dress with additional fertilizer every 4-6 weeks throughout the growing season.

Pest and Disease Control

Common pests affecting spaghetti squash include squash bugs, cucumber beetles, and vine borers. Employ organic or chemical controls as needed to keep these pests at bay. In addition, regularly inspect plants for signs of powdery mildew and other fungal diseases, and apply fungicides as necessary.

Supporting the Vines

Although not mandatory, supporting the vines with a sturdy trellis can improve air circulation, reduce the risk of disease, and make harvesting easier. If using a trellis, train the vines to climb and secure them with soft ties as they grow.

Harvesting Spaghetti Squash: When and How

Timing the Harvest

Spaghetti squash is typically ready for harvest 100-110 days after planting. The squash should have a hard, golden-yellow rind that resists puncture when pressed with a fingernail. The vines may also begin to die back, signalling it’s time to harvest.

Harvesting Techniques

Use a sharp pair of pruning shears to cut the squash from the vine, leaving 1-2 inches of stem attached. This helps prevent decay and prolongs storage life. Avoid handling the squash by the stem, as it can easily break off.

Curing and Storing Spaghetti Squash

Curing the Squash

Curing spaghetti squash involves allowing it to sit in a warm, well-ventilated area for 7-10 days. This process toughens the rind and helps extend storage life. Ideal curing conditions include temperatures of 75-85°F (24-29°C) and relative humidity around 80%.

Storing Spaghetti Squash

Properly cured spaghetti squash can be stored for several months in a cool, dry location. Ideal storage conditions include temperatures of 50-55°F (10-13°C) and relative humidity around 50-70%. Keep the squash off the ground and avoid stacking them on top of each other to promote good air circulation and prevent rot.

Preparing and Enjoying Spaghetti Squash

Cooking Spaghetti Squash

There are several methods for cooking spaghetti squash, including baking, microwaving, and steaming. To prepare the squash for cooking, cut it in half lengthwise and remove the seeds and fibrous pulp. Next, place the squash cut-side down on a baking sheet or in a microwave-safe dish, and cook until the flesh is tender and easily shredded with a fork.

Serving Suggestions

Spaghetti squash is a versatile and healthy alternative to traditional pasta. Its mild flavour and unique texture make it a perfect canvas for a variety of sauces and toppings. For example, try serving it with marinara sauce, pesto, or a creamy Alfredo sauce. You can also toss the cooked squash with olive oil, garlic, and fresh herbs for a simple and delicious side dish.

Spaghetti Squash Recipes

Explore the versatility of spaghetti squash with these delicious and nutritious recipes:

  1. Spaghetti Squash Primavera: Combine cooked spaghetti squash with sautéed bell peppers, onions, zucchini, and cherry tomatoes for a colourful and satisfying meal.
  2. Spaghetti Squash Pad Thai: Swap traditional rice noodles for spaghetti squash and toss with a tangy peanut sauce, bean sprouts, and crushed peanuts.
  3. Spaghetti Squash Lasagna: Layer cooked spaghetti squash with marinara sauce, ricotta cheese, and mozzarella for a delicious low-carb twist on a classic lasagna.

Spaghetti squash is a delicious and healthy alternative to traditional pasta, perfect for those seeking a low-carb option. By following these detailed steps for planting, growing, harvesting, and storing spaghetti squash, you can enjoy this fantastic vegetable all year round. Experiment with different recipes and serving suggestions to make the most of your spaghetti squash harvest and enjoy the benefits of this versatile and nutritious vegetable.

Seeds and planting
Links and Resources

Recommended Products
(These are some of what I use)

These nursery bags
These Grow bags

Pages Seeds Page
Get a Head Start on Spring: The Benefits of Starting Your Seeds Indoors
Saving Vegetable Seeds: A Comprehensive Guide to Gardening Success Planting Guide
Pollock Tomatoes (North hardy Tomato variety)
Tomatoes (Useful information on starting tomatoes from seed)

DIY Garden Irrigation System: A Detailed Guide for Northwest Ontario

Blog Posts

When to start planting seeds
Germination testing your seeds
Looking for sources for seeds?
Heirloom seeds
Chitting your way to more potatoes
So it's before the first frost; what can I plant?


Individual seed and plant information is available in the  "Gardening Shortcut Links" above under "North Hardy Plants to grow". I have successfully grown all of these, and most I grow year to year.






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