How to Grow Collard Green

Start Collard Green seeds indoors 6 weeks before your last frost date, then transplant outdoors 0 weeks after the last frost. Use the search on this page to find exact dates for your ZIP code or city.

Collard Green typically matures in about 60 days from planting. Exact timing varies by variety, soil conditions, and local climate.

Collard Green should be started indoors 6 weeks before the last frost date. This gives seedlings time to establish before being transplanted outside after frost danger has passed.

Collard Green requires full sun (6+ hours) to thrive.

Space Collard Green plants 18 inches apart to allow adequate airflow and root development.

Collard Green has regular (1-1.5 inches/week) water needs. Consistent moisture is important especially during germination and early growth.

Yes — seed saving difficulty for Collard Green is rated difficult. Harvest seed pods when dry and tan, before they shatter. Thresh dried seed stalks, winnow to separate seeds from chaff.

Properly dried and stored Collard Green seeds remain viable for up to 5 years. Store in a cool, dark, dry location in an airtight container with a silica gel packet for best results.

Yes — Collard Green 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.