Collard Greens
Brassica oleracea var. viridis
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Description
Collard greens, a member of the Brassicaceae family, are known for their robust, dark green leaves and slightly bitter flavor. They play a vital role in agroecology and regenerative agriculture as a ground cover plant, helping to suppress weeds and improve soil structure with their deep root systems. Collard greens are often integrated into crop rotation systems to disrupt pest and disease cycles. In a food forest, they serve as a herbaceous layer, providing biomass and supporting biodiversity. Historically, collard greens have been a staple in Southern U.S. cuisine and are valued for their high nutritional content, including vitamins A, C, and K, calcium, and fiber. They are excellent companions to plants like beans and onions, which can help deter pests.
Growing Details
Collard greens thrive in well-drained, fertile soil with a pH between 6.0 and 7.5. Prior to planting, enrich the soil with organic compost and ensure it is well-aerated. Mulching with straw or leaf litter helps retain moisture and suppress weeds. Companion plants like beans and onions can enhance growth and deter pests. Avoid planting near strawberries, which can attract pests. Harvest outer leaves regularly to encourage new growth and extend the harvest period. Store harvested leaves in a cool,
Tags
Carbon Farming
Erosion Preventing
Easy Propagating
Winter Edible
Range (Based on GBIF Data)
The map shows known occurrence points of <strong>Brassica oleracea var. viridis</strong> recorded in scientific biodiversity databases.
Source: <a href="https://www.gbif.org" target="_blank">GBIF.org</a> โ Global Biodiversity Information Facility
Location & Timing
native geo location: Native to the eastern Mediterranean and Asia
applicable geo region: Temperate regions worldwide
language used: en
Flowering:
beginning
of May for 30 days
Harvest:
middle
of Jun for 60 days
Seed Start:
beginning
of February
Indoor Start:
beginning
of February
Transplant:
middle
of April
Uses & Benefits
Edible Rating:
(5/5)
edible uses: The leaves of collard greens are primarily consumed cooked, often boiled, steamed, or sautรฉed. They are a popular ingredient in soups, stews, and side dishes, particularly in Southern U.S. cuisine. The leaves are available year-round but are sweetest after a frost.
Medicinal Rating:
(3/5)
medicinal uses: Collard greens are rich in antioxidants and have been used in traditional medicine to support digestive health, reduce inflammation, and improve bone health due to their high calcium content. They are also known to support cardiovascular health and detoxification processes.
health concerns: While generally safe, collard greens contain oxalates, which can interfere with calcium absorption. Individuals with kidney issues should consume them in moderation.
other uses: Collard greens can be used as a green manure or mulch to improve soil health. Their biomass can be composted to add organic matter to the soil.
Scientific Literature
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Botanical data
specie: Brassica oleracea var. viridis
common names: Collard greens; Collards; Tree cabbage
family: Brassicaceae
sub family:
tribe:
sub tribe:
genus: Brassica
Growing Conditions
area needed: 0.5 m
spacing: 0.5 m
growing difficulty: Low
Deciduous / Evergreen: Evergreen
Seed Temp (Opt/Min/Max): 21ยฐC / 10ยฐC / 30ยฐC
Plant Temp (Opt/Min/Max): 18ยฐC / 5ยฐC / 30ยฐC
water demands: Medium
humidity:
light demands: High
root type: Medium
frost tender: Low
hardness:
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(7/10)
first harvest: 0 years
life span: 1 years
succession: Mid
growth rate: Fast
max height: 1.0 m
max width: 0.6 m
soil preference:
Medium (Loam)
pH preference:
Neutral
flower type:
Hermaphrodite
growth details: Collard greens thrive in well-drained, fertile soil with a pH between 6.0 and 7.5. Prior to planting, enrich the soil with organic compost and ensure it is well-aerated. Mulching with straw or leaf litter helps retain moisture and suppress weeds. Companion plants like beans and onions can enhance growth and deter pests. Avoid planting near strawberries, which can attract pests. Harvest outer leaves regularly to encourage new growth and extend the harvest period. Store harvested leaves in a cool,
Potential Disturbances: Common pests include aphids, cabbage worms, and flea beetles. Introduce beneficial insects such as ladybugs and lacewings to control aphid populations. Use parasitic wasps to manage cabbage worms. Planting marigolds nearby can help repel flea beetles. Organic sprays like neem oil or garlic spray can also be effective.
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