SproutSmart
SproutSmart Intelligent Garden Sowing

Patterson · Onion

Zone 1a Save Garden

Planting Schedule

Add Patterson to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsApr 6th
Last FrostJun 15th
Transplant / Direct Sow OutdoorsJun 8th
Harvest BeginsSep 26th
Harvest EndsJul 15th

Crop Details

Transplant Conditions: Wait until soil reaches 45°F and nights stay above 28°F before moving outdoors. Harden off for 7 days first.
TraitValue
Days to Maturity110
Sun RequirementsFull Sun
Growth HabitBulbing
Support NeededNone
Planting DepthNormal
Germination Temp (°F)75
Min Soil Temp (°F)45
Min Night Temp (°F)28
Harden Off (days)7
Expert Note: For longest storage, transplant sturdy seedlings into well-drained soil and stop fertilizing nitrogen about a month before harvest so the bulbs cure and dry down properly.