Collard Greens illustration

Collard Greens Growing Guide

Brassicaceae family

Days to Harvest60 days
SunlightFull Sun
Frost ToleranceHeavy
Spacing18/sqft
Germination5-10 days
HardinessVery Hardy
Germ. Temp70°F
Start Indoors6 weeks before last frost

Growth Stages

  1. Seedling
  2. Early Vegetative
  3. Late Vegetative / Harvest Ready

Planting Dates by Zone

Zone 1aZone 1bZone 2aZone 2bZone 3aZone 3bZone 4aZone 4bZone 5aZone 5bZone 6aZone 6bZone 7aZone 7bZone 8aZone 8bZone 9aZone 9bZone 10aZone 10bZone 11aZone 11bZone 12aZone 12bZone 13aZone 13b

Frequently Asked Questions

How long does it take to grow Collard Greens?

Collard Greens takes approximately 60 days from planting to harvest.

How much sun does Collard Greens need?

Collard Greens requires full sun (6+ hours direct sunlight per day).

How far apart should I plant Collard Greens?

Plant Collard Greens at 18/sqft using square foot gardening spacing.

Can Collard Greens survive frost?

Collard Greens is tolerant of heavy frost and can withstand freezing temperatures.

How long does Collard Greens take to germinate?

Collard Greens seeds germinate in 5-10 days at an optimal temperature of 70°F.

When should I start Collard Greens seeds indoors?

Start Collard Greens seeds indoors 6 weeks before your last frost date, then transplant -3 weeks after last frost.

Plan Your Collard Greens Garden

Track Collard Greens from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

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