SproutSmart
SproutSmart Intelligent Garden Sowing

Red Baron· Onion

Planting Schedule

Add Red Baron to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsDec 15th
Last FrostFeb 9th
Transplant / Direct Sow OutdoorsFeb 9th
Harvest BeginsMay 20th
Harvest EndsDec 9th

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 Maturity100
Sun Requirements☀️ Full 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 best results, grow from sets or transplants and plant as soon as the soil is workable—onions are cold-tolerant and will size up with longer spring days.