SproutSmart
SproutSmart Intelligent Garden Sowing

Southport White Globe · Onion

Zone 9a Save Garden

Planting Schedule

Add Southport White Globe to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsDirect Sow
Last FrostMar 6th
Transplant / Direct Sow OutdoorsMar 6th
Harvest BeginsJun 4th
Harvest EndsNov 26th

Crop Details

Transplant Conditions: Wait until soil reaches 45°F and nights stay above 35°F before moving outdoors.
TraitValue
Days to Maturity90
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)Not Required
Expert Note: For long-day storage onions like ‘Southport White Globe,’ prioritize a sunny site and consistent moisture so bulbs form evenly and store well.