SproutSmart
SproutSmart Intelligent Garden Sowing

Okinawan Purple · Sweet Potato

Planting Schedule

Add Okinawan Purple to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsJan 9th
Last FrostMar 6th
Transplant / Direct Sow OutdoorsMay 1st
Harvest BeginsJul 30th
Harvest EndsNov 26th

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 Maturity90
Sun RequirementsFull Sun
Growth HabitVine
Support NeededTrellis
Planting DepthNormal
Germination Temp (°F)75
Min Soil Temp (°F)65
Min Night Temp (°F)55
Harden Off (days)10
Expert Note: Grow from slips in warm weather only—wait until soil is truly warm and keep the planting area weed-free while vines establish.