SproutSmart
SproutSmart Intelligent Garden Sowing

Red Wethersfield · Onion

Zone 7b Save Garden

Planting Schedule

Add Red Wethersfield to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsFeb 13th
Last FrostApr 10th
Transplant / Direct Sow OutdoorsMay 22nd
Harvest BeginsSep 19th
Harvest EndsOct 28th

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 Maturity120
Sun RequirementsFull Sun
Growth HabitBulbing
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)45
Min Night Temp (°F)28
Harden Off (days)7
Expert Note: For long storage onions like Wethersfield, transplant/plant early so bulbs form before peak summer heat, and avoid delaying past cool-season growth.