SproutSmart
SproutSmart Intelligent Garden Sowing

Costata Romanesco · Zucchini

Zone 2b Save Garden

Planting Schedule

Add Costata Romanesco to your garden to build a schedule and get reminders.
MilestoneDate
Start IndoorsMay 1st
Last FrostMay 15th
Transplant / Direct Sow OutdoorsMay 15th
Harvest BeginsJul 4th
Harvest EndsAug 25th

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 Maturity50
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 best flavor, grow in warm soil and harvest frequently when fruits are young and tender (often 6–8 in).