SproutSmart
SproutSmart Intelligent Garden Sowing

Okinawan · Sweet Potato

Zone 8a Save Garden

Planting Schedule

Add Okinawan to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsDirect Sow
Last FrostApr 1st
Transplant / Direct Sow OutdoorsMay 27th
Harvest BeginsSep 9th
Harvest EndsNov 5th

Crop Details

Transplant Conditions: Wait until soil reaches 65°F and nights stay above 55°F before moving outdoors. Harden off for 10 days first.
Direct sow preferred — this crop has sensitive roots and does not transplant well. If starting indoors, use biodegradable pots and disturb roots as little as possible when moving outdoors.
TraitValue
Days to Maturity105
Sun RequirementsFull Sun
Growth HabitVine
Support NeededNone
Planting DepthNormal
Germination Temp (°F)80
Min Soil Temp (°F)65
Min Night Temp (°F)55
Harden Off (days)10
Expert Note: Okinawan sweet potatoes thrive in well-drained, sandy soils and need consistent moisture during their long growing season.