
Complete the Garden
Grow guide & specs
- Difficulty
- Beginner
- Germination
- 5-10 days
- USDA zones
- Annual
- Sunlight
- Full Sun to Partial Shade (3-6 hours daily)
- Water
- Moderate
- Mature height
- 6-12 in
- Planting season
- Indoor: Any time of year | Outdoor: After last frost
- Seeds included
- 30-50 seeds
- Scientific name
- Lactuca sativa
What's included
- Premium non-GMO Lactuca sativa (lettuce) seeds, real loose nutrient-rich potting soil (not compressed discs), recyclable planter with clear lid for humidity control, and detailed step-by-step growing instructions. Everything needed to start growing - no extra supplies required.
How to grow it
Fill your Seeds In A Cup container with growing medium. Plant seeds per included guide. Water. Grow light 14-16 hrs/day. Germination: 5-10 days.
Follow species-specific care in included guide. Maintain proper moisture and lighting.
Harvest at peak maturity per included guide. Enjoy your homegrown lettuce!
Frequently Asked Questions
What are the germination requirements for Lettuce (Lactuca sativa) seeds?
Lettuce seeds are photoblastic, requiring light to trigger germination. They should be sown very shallowly, approximately 1.5875 to 3.175 millimeters (1/16 to 1/8 inch) deep, or pressed gently onto the surface of the Premium Nutrient-Rich Potting Soil and covered with a very thin layer of soil.
What is the optimal temperature for Lettuce seed germination?
Lettuce is a cool-season crop that germinates best at temperatures between 12 and 20 degrees Celsius (53 to 68 degrees Fahrenheit). Temperatures above 24 degrees Celsius (75 degrees Fahrenheit) can induce thermodormancy, preventing germination.
How deep should Lettuce seeds be planted?
Sow the seeds 1.5875 to 3.175 millimeters (1/16 to 1/8 inch) deep in the provided Premium Nutrient-Rich Potting Soil, pressing the medium gently over the seeds.
What USDA Hardiness Zones are suitable for Lettuce outdoors?
Lettuce is grown as a cool-season annual in USDA Zones 2 through 11, performing best during the spring and fall seasons.
Can I grow Lettuce indoors year-round?
Yes. Lettuce can be grown indoors on a bright windowsill.
Why does this kit use Premium Nutrient-Rich Potting Soil instead of compressed coir discs?
Lettuce seeds are very small and can easily get lost or buried too deep in the coarse fibers of expanding coir discs. Our Premium Nutrient-Rich Potting Soil provides a stable, uniform surface for surface-sown seeds.