Great Lakes · Lettuce
Planting Schedule
Add Great Lakes to your garden to build a schedule and get reminders.
| Milestone | Date |
|---|---|
| Start Indoors | May 25th |
| Last Frost | Jun 15th |
| Transplant / Direct Sow Outdoors | Jun 15th |
| Harvest Begins | Aug 24th |
| Harvest Ends | Jul 15th |
Crop Details
Transplant Conditions:
Wait until soil reaches 40°F
and nights stay above 32°F
before moving outdoors.
Harden off for 6 days first.
| Trait | Value |
|---|---|
| Days to Maturity | 70 |
| Sun Requirements | ☀️ Full Sun |
| Growth Habit | Rosette |
| Support Needed | None |
| Planting Depth | Surface |
| Germination Temp (°F) | 45 |
| Min Soil Temp (°F) | 40 |
| Min Night Temp (°F) | 32 |
| Harden Off (days) | 6 |
Expert Note: For crisp heads, prioritize cool weather and keep soil evenly moist—heat spikes quickly turn lettuce bitter and loose-headed.