SproutSmart
SproutSmart Intelligent Garden Sowing

Imperial · Broccoli

Planting Schedule

Add Imperial to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 15th
Last FrostMay 13th
Transplant / Direct Sow OutdoorsMay 13th
Harvest BeginsJul 20th
Harvest EndsSep 27th

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.
TraitValue
Days to Maturity68
Sun RequirementsFull Sun
Growth HabitRosette
Support NeededNone
Planting DepthNormal
Germination Temp (°F)45
Min Soil Temp (°F)40
Min Night Temp (°F)32
Harden Off (days)6
Expert Note: For the tightest heads, keep temperatures consistently cool early (avoid letting seedlings sit in warm soil) and water evenly to prevent stress-driven loose heads.