SproutSmart
SproutSmart Intelligent Garden Sowing

Charleston Gray · Watermelon

Zone 3b Save Garden

Planting Schedule

Add Charleston Gray to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsJun 16th
Last FrostMay 19th
Transplant / Direct Sow OutdoorsJun 30th
Harvest BeginsSep 23rd
Harvest EndsSep 21st

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 Maturity85
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: For the sweetest fruit, wait to transplant only after nights stay warm and the soil is at least ~65°F, then keep vines evenly watered (not soggy).