SproutSmart
SproutSmart Intelligent Garden Sowing

Gold Coin · Onion

Zone 3a Save Garden

Planting Schedule

Add Gold Coin to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsMar 20th
Last FrostMay 15th
Transplant / Direct Sow OutdoorsMay 15th
Harvest BeginsAug 13th
Harvest EndsSep 1st

Crop Details

Transplant Conditions: Wait until soil reaches 40°F and nights stay above 28°F before moving outdoors. Harden off for 7 days first.
TraitValue
Days to Maturity90
Sun RequirementsFull Sun
Growth HabitBulbing
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)40
Min Night Temp (°F)28
Harden Off (days)7
Expert Note: For sweet cipollini-type onions, keep soil evenly moist early and avoid nitrogen excess so bulbs size up without getting pungent.