Q: How many days do head lettuce seeds need to germinate?
A: Seeds sprout within 7‑12 days under cool, moist and sunny growing conditions.
Q: Does head lettuce prefer cool weather?
A: Yes, head lettuce is a typical cool‑season crop and easily suffers from heat bolting.
Q: How to preserve leftover head lettuce seeds?
A: Seal seeds tightly and store them in cool, dry and shaded locations, stay away from high‑temperature and humid air.