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July 26, 2026Sources cited
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Collard greens

Collard greens are a group of loose-leaf cultivars of *Brassica oleracea* grown for their large, dark green edible leaves.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Collard greens are a group of loose-leaf cultivars of *Brassica oleracea* grown for their large, dark green edible leaves. They are a leafy vegetable in the cabbage family and are especially associated with cooking in the southern United States, where they are commonly prepared as a winter green.

Botany

Collard greens are loose-leaf cultivars of *Brassica oleracea* in the acephala group. They are related to other cabbage-family vegetables and do not form a tight head.

Culinary use

Collard greens are eaten as cooked greens, with leaves typically boiled, simmered, or braised. They are especially common in regional cooking in the southern United States.

Nutrition

Collard greens are described as a source of important nutrients, including vitamins A and C, and other minerals and vitamins. Like many dark leafy greens, they are used as a nutrient-dense vegetable.

Cultivation

Collards are a cool-season vegetable that tolerates cold weather well and can be available through much of the year. Their flavour and texture are often considered improved after frost.

Key facts

  • Collard greens are non-heading cabbages grown for their broad, edible leaves.
  • They belong to the same species as cabbage, kale, and broccoli.
  • The plant is valued as a source of vitamins and minerals, including vitamins A and C.
  • Collard greens are commonly cooked, often by boiling or simmering.
  • The crop is relatively cold-tolerant and is often harvested in cool weather.
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Canadian context

Collard greens are available in Canadian grocery stores and farmers’ markets, especially in large cities with diverse produce offerings, and are used in Southern-inspired, soul food, and Caribbean cooking.

Frequently asked questions

What are collard greens?
Collard greens are loose-leaf cultivars of *Brassica oleracea* grown for their edible leaves.
Are collard greens the same as kale?
They are closely related and belong to the same species group, but they are not the same cultivar.
How are collard greens usually eaten?
They are usually cooked, commonly by boiling, simmering, or braising.
Where are collard greens especially popular?
They are especially associated with the southern United States.
Are collard greens nutritious?
Yes. They are described as a source of vitamins and minerals, including vitamins A and C.

References

  1. Encyclopaedia Britannicahttps://www.britannica.com/plant/collard
    Supports: Botanical classification; nutritional notes; southern U.S. culinary use.
  2. Simple English Wikipediahttps://simple.wikipedia.org/wiki/Collard_greens
    Supports: Loose-leaf cultivars of *Brassica oleracea*; acephala group; edible dark leaves; seasonal characteristics.
  3. Academy of Nutrition and Dieteticshttps://www.eatright.org/food/food-groups/vegetables/all-about-collard-greens
    Supports: General description; origin and cultural context; state vegetable note.
  4. Merriam-Websterhttps://www.merriam-webster.com/dictionary/collard
    Supports: Dictionary definition as a cabbage with loose leaves; plural usage; cooked as a vegetable.
  5. Colorado State Universityhttps://www.chhs.colostate.edu/fsi/food-articles/produce/collard-greens/
    Supports: Cold-hardiness; leafy greens classification; nutrient content; crop description.