SproutSmart
SproutSmart Intelligent Garden Sowing

Cha Cha · Winter Squash

Planting Schedule

Add Cha Cha to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsJun 29th
Last FrostJun 1st
Transplant / Direct Sow OutdoorsJul 13th
Harvest BeginsOct 11th
Harvest EndsAug 1st

Crop Details

Transplant Conditions: Wait until soil reaches 65°F and nights stay above 55°F before moving outdoors. Harden off for 12 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)70
Min Soil Temp (°F)65
Min Night Temp (°F)55
Harden Off (days)12
Expert Note: For kabocha-type winter squash, start seeds only briefly if needed—then transplant into warm soil and give plenty of room for the vine to expand.