What You Need to Know About Growing Winter Squash

Winter squash is one of my favorite crops to grow for a few reasons. On top of having great nutritional value and taste, they can also produce substantial yields. Perhaps above all else, winter squash have impressive shelf life that makes it easy to eat home-grown produce in winter.

Below I will detail what you need to know about growing winter squash in the garden. Let’s get started!

Long-Term Storage

One of winter squash’s biggest advantages is its natural storage life. After harvest, they require curing for 1-2 weeks to harden their skin, which allows them to store for months. On average:

• Most winter squash: 2–6 months
• Best-storing varieties (like Hubbard or Butternut): up to 8–12 months under ideal conditions

This makes them an excellent “pantry crop,” giving gardeners access to homegrown vegetables well into the winter months.

Winter Squash vs. Summer Squash

Winter squash differ from summer squash in a few key ways. But first, what is considered summer squash? Here are the most common types:

1. Zucchini: The classic green squash with a mild flavor that works in everything from sautés to baked goods.
2. Yellow Crookneck Squash: Bright yellow with a curved neck and slightly bumpy skin; tender and a bit sweeter than zucchini.
3. Yellow Straightneck Squash: Similar in taste to crookneck but with a smooth, straight shape that’s easy to slice.
4. Pattypan Squash: Small and round with scalloped edges; great roasted or grilled whole.
5. Costata Romanesco: An Italian heirloom zucchini with ridges and a richer, nuttier flavor than standard varieties.

Here is how winter squash differs from summer squash:

• Harvest time: Winter squash is harvested when fully mature; summer squash is picked young.
• Skin: Winter squash has hard, thick skin that allows long-term storage. Summer squash has soft, thin skin and must be eaten quickly.
• Flavor and texture: Winter squash is generally sweeter and denser, while summer squash is more tender and mild.

Below is a chart that dives deeper into popular types of winter squash:

Variety	Flavor / Texture	Storage Length	Yield	Best Uses
Butternut	Sweet, nutty, smooth	4–6 months	High	Soups, roasting, purees
Acorn	Mild, slightly sweet	2–4 months	Moderate	Stuffed, roasted
Hubbard	Rich, dense, slightly sweet	6–12 months	High	Baking, roasting, long storage
Spaghetti	Mild, stringy	3–5 months	Moderate	Pasta substitute, casseroles
Kabocha	Sweet, dense, creamy	4–6 months	Moderate	Soups, roasting, pies
Delicata	Tender, sweet, creamy	2–3 months	Moderate	Roasting, stuffing
Buttercup	Sweet, dense	4–6 months	Moderate	Soups, roasting
Carnival	Sweet, nutty	2–4 months	Moderate	Roasting, salads
Golden Nugget	Sweet, smooth	3–4 months	Moderate	Roasting, soups
Blue Hubbard	Rich, nutty, dense	6–12 months	High	Baking, roasting, long storage

What Type Should I Grow?

• Best for small spaces or trellising: Acorn, Delicata, Spaghetti, Buttercup
• Best long-term storage: Hubbard, Blue Hubbard, Butternut
• Best flavor: Kabocha, Butternut, Delicata
• Highest yield: Butternut, Hubbard, Blue Hubbard

For me personally?
Best taste: Kabocha and Butternut for their rich, sweet flavors.
For highest yield: Butternut and Acorn are reliable producers in most gardens. Hubbard squash can also yield large fruits but requires more space.

Planting Winter Squash

• Soil & timing: Sow seeds after the last frost when soil is 70–95°F. In colder regions, start indoors 2–4 weeks early.
• Spacing: Bush varieties 2–3 ft apart; vining types 4–6 ft or use a trellis.
• Sun & soil: Full sun and well-draining, compost-enriched soil.

Harvesting Winter Squash

• Signs of maturity: Hard skin, deep color, and dying back of vines.
• Technique: Cut with 2–4 inches of stem; avoid breaking it.
• Curing & storage: Cure 1–2 weeks in a warm, dry spot, then store in a cool, dry, dark place. Properly cured squash can last 2–12 months depending on variety.

Note that bush varieties mature in about 80–100 days and are typically harvested in late summer to early fall, while vining varieties take 90–120 days and are ready for harvest from mid to late fall.