How to Grow Acorn Squash

Start Acorn Squash seeds indoors 4 weeks before your last frost date, then transplant outdoors 2 weeks after the last frost. Use the search on this page to find exact dates for your ZIP code or city.

Acorn Squash typically matures in about 85 days from planting. Exact timing varies by variety, soil conditions, and local climate.

Acorn Squash should be started indoors 4 weeks before the last frost date. This gives seedlings time to establish before being transplanted outside after frost danger has passed.

Acorn Squash requires full sun (6-8 hours) to thrive.

Space Acorn Squash plants 48 inches apart to allow adequate airflow and root development.

Acorn Squash has regular (1 inch/week) water needs. Consistent moisture is important especially during germination and early growth.

Yes — seed saving difficulty for Acorn Squash is rated moderate. Let fruit mature fully on the vine — cure for 1 month after harvest before extracting seeds. Scoop seeds from cured squash, rinse, dry flat for 2 weeks.

Properly dried and stored Acorn Squash seeds remain viable for up to 4 years. Store in a cool, dark, dry location in an airtight container with a silica gel packet for best results.

Yes — Acorn Squash is open-pollinated, meaning seeds saved from your harvest will grow plants true to the parent variety. This makes it an excellent candidate for building a self-sustaining garden.