Grand Rapids TBR · Lettuce
Planting Schedule
Add Grand Rapids TBR to your garden to build a schedule and get reminders.
| Milestone | Date |
|---|---|
| Start Indoors | Mar 4th |
| Last Frost | Apr 1st |
| Transplant / Direct Sow Outdoors | Apr 1st |
| Harvest Begins | May 16th |
| Harvest Ends | Nov 5th |
Crop Details
Transplant Conditions:
Wait until soil reaches 40°F
and nights stay above 30°F
before moving outdoors.
Harden off for 6 days first.
| Trait | Value |
|---|---|
| Days to Maturity | 45 |
| 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) | 30 |
| Harden Off (days) | 6 |
Expert Note: For best frill and crunch, keep lettuce evenly moist and transplant/plant during cool weather to avoid bitterness and bolting.