Bb, Both indoor and outdoor methods can work well for growing lettuce! Starting lettuce indoors allows you to transplant seedlings into the garden, giving you an earlier harvest. However, lettuce seeds can also be directly sown outdoors, and they will germinate and grow well in the garden. It ultimately depends on your preference and the timing of your planting. Check out our Lettuce Growing Guide for tips.

Kristin, Once your seeds have germinated, you can remove the humidity dome, transfer the seed tray off the heat mat, and place it under lights. Best of luck with your seedlings, and feel free to reach out if you have any more questions!

Seedlings need at least 12-16 hours of light each day. I set my timer on my lights for 16 hours on, then 8 hours off. Keep the lights about 2-inches above the seedlings. Adjust as the plants grow.