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7 Lettuce Mix, Cool Season

  • Scientific name: Lactuca sativa
  • Includes: romaine, butterhead, loose leaf, and oak leaf types
  • Also known as:
  • Ideal planting time: Mar, Apr, May, June, Jul, Aug, Sept
  • Annual/Perennial. Approximate days until harvest: 28 days
  • Seed supplier: Adaptive Seeds

Growing & Seed Saving Tips

From Adaptive Seeds:

“Sow indoors in flats with good potting soil year-round. Transplant into the garden 3-4 weeks after sprouting at 3″ spacing for leaf, 12″ for heads. Alternatively, direct sow March through September. In our area, lettuce can go through winter if protected. Succession sow for continual harvest.

Seed Saving

Collect seeds when flowers are downy like dandelions. Cut seed heads and place upside down in a bag to dry for a few days. Knock seed heads against side of bucket or tote, rub downy fluff off seeds. Winnow and screen to clean.”

Share your knowledge!

Do you have planting tips, photos, or recipes to share? You can contribute to this planting guide to help others using the UW Tacoma Seed Library by filling out the feedback and submission form.