Little Gem

Lettuce

55d to harvest

Crisp as a fresh snowfall, Little Gem forms tight, upright heads with a jewel-bright green heart and a tender, buttery bite. The leaves stay pleasantly sweet and fine-textured from first harvest through the heartiest cool-season days, making each cluster feel exceptionally clean and refined. Grow Little Gem for elegant salads and vibrant garnishes, or for quick braises and savory sautés where its delicate romaine texture shines.

Crop Dates

Milestone	Date
Start Indoors	Apr 17th
Last Frost	May 15th
Transplant / Sow Outdoors	May 15th
Harvest Begins	Jul 9th
Harvest Ends	Sep 1st

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	35
Harden Off (days)	6

Recommended Companions

Frequently Asked Questions

What pest or disease most commonly affects Lactuca sativa (Little Gem), and how can I manage it?

A common problem is lettuce aphids, which cluster on tender new leaves and leave sticky honeydew that can lead to sooty mold. Rinse plants with a strong spray of water to knock aphids off, then apply insecticidal soap directly on the undersides every 4–7 days as needed. If you see gray-white down on leaves or sudden collapse in cool, damp weather, improve airflow and avoid overhead watering to reduce downy mildew risk.

How do I know when Little Gem is ready to harvest?

Harvest when heads are firm, tight, and reach roughly the stated size for the variety (often around 5–7 inches across) and the outside leaves feel crisp rather than flexible. Count forward to about 55 days from sowing/transplanting and check head firmness—lettuce that’s loose or still forming won’t keep quality as well. Cut at the base in the morning for the best texture, and don’t wait for overmaturity because heat-triggered bolting can ruin flavor.