Crisp Mint

Lettuce

50d to harvest

Cool, crisp leaves with a bright mint-green glow—Crisp Mint Romaine delivers a satisfyingly snappy bite and a clean, refreshing flavor that feels as crisp as it looks. At maturity in about 50 days, it forms an upright, tightly held head with tender, succulent texture from the center outward. Ideal for fresh salads and vibrant garnishes, Crisp Mint stays crisp and visually appealing, making it a standout choice for gardeners who love dependable, garden-fresh crunch.

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 1st
Transplant / Sow Outdoors	Apr 1st
Harvest Begins	May 21st
Harvest Ends	Nov 5th

Crop Details

Trait	Value
Days to Maturity	50
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)	32
Harden Off (days)	5

Frequently Asked Questions

What pest or disease is most likely to affect Lactuca sativa (crisp mint), and how can I treat it?

Watch for slugs and snails, especially in humid conditions, which chew ragged holes in lettuce leaves. Hand-pick at dusk, remove hiding spots, and use a physical barrier (copper tape around beds/containers) or slug bait that’s labeled for edible crops. If you see yellowing with a fuzzy gray/white growth at the crown, improve airflow, avoid overhead watering, and remove infected plants to reduce spread.

How often should I water crisp mint lettuce during its main growth phase to keep leaves crisp?

During the 30–45 days leading up to harvest, keep the top 1 inch of soil consistently moist but never waterlogged. Water when the surface starts to dry, typically about 1–2 times per week depending on heat and container size, and water early so leaves dry quickly. Uneven moisture causes bitterness and a tougher texture in Lactuca sativa.

How do I know crisp mint lettuce is ready to harvest?

Harvest when heads (or rosettes) reach a usable size and the outer leaves feel firm rather than limp; for Lactuca sativa this is commonly around day 50. Cut outer leaves for a longer window of picking, or harvest the whole plant at the first sign of fast bolting (flower stalk forming). Avoid waiting until leaves look overly loose or the plant starts stretching upward.