Darkmar 21 · Brussels Sprouts
Planting Schedule
Add Darkmar 21 to your garden to build a schedule and get reminders.
| Milestone | Date |
|---|---|
| Start Indoors | Feb 23rd |
| Last Frost | Mar 23rd |
| Transplant / Direct Sow Outdoors | Mar 16th |
| Harvest Begins | Jun 9th |
| Harvest Ends | Nov 12th |
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 | 85 |
| Sun Requirements | Full Sun |
| Growth Habit | Upright |
| Support Needed | None |
| Planting Depth | Normal |
| Germination Temp (°F) | 45 |
| Min Soil Temp (°F) | 40 |
| Min Night Temp (°F) | 30 |
| Harden Off (days) | 6 |
Expert Note: For the sweetest sprouts, keep plants growing steadily and let light frosts do the flavor work—avoid heat waves and sudden drought stress.