SproutSmart
SproutSmart Intelligent Garden Sowing

Bianca Di Maggio · Onion

Zone 1b Save Garden

Planting Schedule

Add Bianca Di Maggio to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsDirect Sow
Last FrostJun 1st
Transplant / Direct Sow OutdoorsJun 1st
Harvest BeginsAug 10th
Harvest EndsAug 1st

Crop Details

Transplant Conditions: Wait until soil reaches 45°F and nights stay above 35°F before moving outdoors. Harden off for 5 days first.
TraitValue
Days to Maturity70
Sun RequirementsFull Sun
Growth HabitBulbing
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)45
Min Night Temp (°F)35
Harden Off (days)5
Expert Note: For sweet Cipollini-style onions, avoid drought stress early and harvest once tops flop—then cure briefly before pickling.