Collard Greens

Brassica oleracea var. viridis, Brassicaceae

Zones

2a–10b

Layer

Herbaceous

Lifespan

Annual

Growth

Moderate

Guild Roles

Producer

Growing Conditions

Sun

Full Sun (optimal)

Water

Moderate

Soil pH

6 – 7.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

KaleBrassica oleracea var. sabellica

Pest DeterrentBeneficial Insect Habitat

Gai ChoyBrassica juncea var. integrifolia

Pest DeterrentBeneficial Insect Habitat

Rubber PlantFicus elastica

Shade Provision

Swiss ChardBeta vulgaris var. cicla

Nutrient AccumulationBeneficial Insect Habitat

Antagonistic Plants

English WalnutJuglans regia

Collard greens are severely affected by juglone toxicity from walnut trees

Hartley WalnutJuglans regia Hartley

Hartley walnut juglone toxicity prevents normal collard green development

Uses

Functions

Food

Edible Parts

Leaves

Common Questions

What zones does Collard Greens grow in?

Collard Greens grows in USDA hardiness zones 2a through 10b.

What are good companion plants for Collard Greens?

Good companions for Collard Greens include Kale, Gai Choy, Rubber Plant, Swiss Chard.

Design guilds with Collard Greens and see companion relationships visually.

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