Botanical Interests, Inc.
Lettuce Butterhead Buttercrunch Organic
Botanical Name: Lactuca sativa
Days to Maturity: 21–65 days
Native: Unknown; lettuce has been in cultivation for a long time.
Hardiness: Frost-tolerant annual
Plant Dimensions: 5"–6" wide, 3"–5" tall
Variety Information: Large, soft, slightly crumpled light green leaves in a loose head with a creamy yellow core. 'Buttercrunch' is a butterhead type lettuce bred at Cornell University.
When to Sow Outside: RECOMMENDED. 2 to 4 weeks before your average last frost date, and when soil temperature is at least 40°F, ideally 60°–70°F. Successive Sowings: Every 3 weeks until 4 to 6 weeks before your average first fall frost date. Mild Climates: Sow in fall and winter for cool season harvests.
When to Start Inside: 4 to 6 weeks before your average last frost date, and in summer when soil temperatures are too warm (above 80°F) to germinate lettuce seed.
Days to Emerge: 5–10 days
Seed Depth: Surface to ⅛"
Seed Spacing: A group of 3 seeds every 6"
Row Spacing: 8"
Thinning: When ½" tall, thin to 1 every 6"
Harvesting: Harvest in the morning, by cutting off at ground level. If regrowth is desired, cut the leaves higher, at 2". For a continual supply, outer, individual leaves can be harvested at any stage of maturity, but leave at least half of the plant for regrowth.
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