How to Grow Napa Cabbage

Start Napa Cabbage seeds indoors 6 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.

Napa Cabbage typically matures in about 70 days from planting. Exact timing varies by variety, soil conditions, and local climate.

Napa Cabbage 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.

Napa Cabbage requires full sun (6-8 hours) to thrive.

Space Napa Cabbage plants 18 inches apart to allow adequate airflow and root development.

Napa Cabbage has regular (1-2 inches/week) water needs. Consistent moisture is important especially during germination and early growth.

Yes — seed saving difficulty for Napa Cabbage is rated moderate. Allow heads to bolt in spring heat. Harvest seed pods when tan and dry. Thresh dried seed stalks, winnow to separate seeds.

Properly dried and stored Napa Cabbage 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 — Napa Cabbage 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.