SproutSmart
SproutSmart Intelligent Garden Sowing

Ishikura · Bunching Onion

Zone 7b Save Garden

Planting Schedule

Add Ishikura to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsFeb 27th
Last FrostApr 10th
Transplant / Direct Sow OutdoorsMay 29th
Harvest BeginsJul 28th
Harvest EndsOct 28th

Crop Details

Transplant Conditions: Wait until soil reaches 45°F and nights stay above 35°F before moving outdoors. Harden off for 7 days first.
TraitValue
Days to Maturity60
Sun RequirementsFull Sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)45
Min Night Temp (°F)35
Harden Off (days)7
Expert Note: For the longest tender harvest, keep plants evenly watered and feed lightly once they begin active growth—avoid letting them dry out between waterings.