DibbleGrowing collard greens: from seed to harvest
Start seeds indoors about 4 weeks before planting out, and set the plants out in the cool part of the year. Tolerant of both heat and cold, collards keep giving: pick the lower leaves for months.
Planting dates for collard greens by zone
| Zone | Start seeds indoors | Sow or transplant | Harvest |
|---|---|---|---|
| Zone 3 | March 24 | April 21 | June 19 |
| Zone 4 | March 17 | April 14 | June 12 |
| Zone 5 | March 9 | April 6 | May 31 |
| Zone 6 | February 25 | March 25 | May 27 |
| Zone 7 | February 5 | March 5 | April 25 |
| Zone 8 | June 29 | July 27 | March 2 |
| Zone 9 | July 18 | August 15 | March 2 |
| Zone 10 | January 1 | January 1 | March 2 |
| Zone 11 | August 21 | September 18 | March 2 |
Each date is the start of the best window from the same climate engine the Dibble app uses, run at typical places in each zone. Dibble tunes them to your garden's own location and lets you adjust frost dates for your own yard.
Companion plants
Good neighbors for Collard Greens:
Better kept apart:
Family and rotation
Collard Greens is in the brassicas family. Hungry leaf crops. Follow legumes; avoid following other brassicas. Learn about crop rotation.
Related crops
Kale
When to plantBroccoli
When to plantRadish
When to plantCabbage
When to plantCauliflower
When to plantBrussels Sprouts
When to plant
Questions
When should I plant collard greens?
It depends on your zone. Collard Greens is a hardy crop, so the timing follows your last spring frost. Look up your zone in the table below for exact start, sow, and harvest dates, or open Dibble and set where your garden is to get your own calendar.
How long does it take to grow collard greens?
About 60 days from transplant to the first harvest, with a picking window of roughly 90 days after that.
What grows well with collard greens?
Good companions include Onion, Beet, Potato. Keep it away from Tomato, Strawberry.
Plant at the right time this season
Dibble builds your calendar in under a minute. Free to start, no account needed.