SproutSmart
SproutSmart™ Intelligent Garden Sowing

When to Plant Colossus in Zone 3a

Family: Violaceae Flower
Zone 3a Save Garden

Planting Schedule

Add Colossus to your garden to build a schedule and get reminders.

Get the exact Zone 3a timeline for your Colossus. See localized frost dates, indoor sowing windows, and optimal companions below.

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Botanical illustration of Colossus

Crop Dates : 3a

Growing note: This crop establishes over multiple seasons (~70 days / ~1 year to first harvest). Plant on the frost schedule; first harvest follows establishment, not a single frost-free season.
MilestoneDate
Start IndoorsMar 6th
Last FrostMay 15th
Transplant / Sow OutdoorsMay 15th
Harvest BeginsJul 24th
Harvest EndsSep 1st

Garden Alerts

This crop establishes over multiple seasons (~70 days / ~1 year to first harvest). Plant on the frost schedule; first harvest follows establishment, not a single frost-free season.

Recommended Companions

Sangria Lettuce
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China Rose Radish
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Crimson Giant Radish
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Lollo Rossa Lettuce
View Guide →

Garden Alerts

This crop establishes over multiple seasons (~70 days / ~1 year to first harvest). Plant on the frost schedule; first harvest follows establishment, not a single frost-free season.