What it is
Collard Greens (Brassica oleracea acephala) is in the Brassicaceae (Mustard) family. The South's bulletproof green. Pick the lower leaves and it just keeps making more for months.
How to grow it
It wants full sun to part shade, water it even, and give it rich soil. Target a soil pH around 6.0–7.5. Space plants about 18–24 in apart. Expect roughly 55–75. Cool-season; very cold-hardy.
How it's used
Collard Greens is used: braised, sautéed, soups.
🔎 How to identify it
- Large flat blue-green leaves
- Tall central stem
- Frost improves flavor
Edibility
How to grow & propagate collard greens
Everything I've worked out about starting this one, keeping it alive through a Texas year, and turning one plant into many — free.
How to propagate collard greens
The cabbage family is a cool-season seed crop. Start the heading types (cabbage, broccoli, cauliflower) in trays 5–6 weeks before you want them in the ground; sow the fast roots and greens (radish, turnip, mustard, arugula) straight into the bed. They all cross with each other readily, so if you're saving seed, only let one variety of a given species flower at a time.
Growing collard greens in Texas
Give it full sun to part shade and rich soil. Match the spot to the plant and most of the battle is already won.
This is a cool-season crop. On the Texas Gulf Coast that means your real windows are fall and late winter, not summer — sow as the heat breaks in September–October and again in late winter, and you'll harvest through our mild winters while the rest of the country is frozen out.
Keep moisture even, especially while it's young — deep, less-frequent soaks build better roots than a daily sprinkle.
Harvesting
Figure on roughly 55–75 before you're harvesting. Harvest at peak and keep harvesting — most vegetables produce harder the more you pick, and one left to over-mature tells the plant its job is done. The part you're after: leaves.
Making more for free
Every seed we sell is open-pollinated, which means you can save your own from the best plants and it'll grow true next year. Let a few of your strongest plants finish and go to seed, dry it fully, and store it cool and dark. That's the whole point of heirlooms — buy once, grow forever.
Keep this knowledge offline
A garden full of collard greens is a real asset when times get hard — but the know-how to grow, store, and use it shouldn't live only on a website you can't reach. That's why I keep a copy of the references I rely on on a local server at home. Project NOMAD is a free, open-source way to run Wikipedia, survival and medical guides, maps, and even a private AI on your own hardware — knowledge that keeps working with no internet, no cloud, no signal.
See how I keep my library offline →Part of the free Texas Roots plant database, compiled by Jordan Polasek from his greenhouse in El Campo, Texas. Free to read and share. If it helped, the best thanks is to grow something.