How to Grow Alfalfa Cimarron

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Alfalfa Cimarron

Medicago sativa var. Cimarron

herb

Alfalfa Cimarron is a cold-hardy perennial legume variety prized for its exceptional winter survival and forage quality. This cultivar is specifically bred for harsh climates and produces nutritious leaves and stems used primarily for livestock feed and sustainable agriculture. It establishes deep root systems that improve soil structure and nitrogen content.

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Example Alfalfa Cimarron timeline · Pittsburgh, PA (Zone 6b)

Plant Alfalfa Cimarron
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Alfalfa Cimarron
Around Jun 16

≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Alfalfa Cimarron dates for your own zip code.

Growing Conditions

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Sun: Full sun, 6-8+ hours daily; minimum 5 hours required

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Water: Moderate to high water needs during establishment (1-2 inches weekly); drought-tolerant once established due to deep taproot system; reduce watering in winter dormancy

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Spacing: 6-8 inches between plants in rows; rows 24-36 inches apart for mechanical harvesting inches

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Days to maturity: 60-90 days to first cutting; reaches productive stage within one growing season

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Planting depth: 0.25-0.5 inches deep; press soil firmly after seeding for good seed-soil contact

Soil

Type: Well-draining loamy to clay loam soil with good calcium content

pH: 6.5-7.5

Amendments:

Lime if pH is below 6.5 Phosphorus fertilizer Potassium for root development Compost for organic matter

Growing Zones

Find your zone →

Exceptionally hardy in zones 2-7; survives severe winters better than standard alfalfa varieties

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a

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Growth Stages

Seed Germination & Seedling

7-14 days germination; 2-3 weeks to true leaf stage

Cotyledons emerge and develop small compound leaves; plant is delicate and susceptible to competition

Ensure consistent moisture but avoid waterlogging; control weeds actively; protect from grazing; maintain temperatures above 40°F for germination

Vegetative Growth & Establishment

4-8 weeks

Plant develops multiple stems with characteristic trifoliate leaves; taproot system deepens; lateral roots establish; plant reaches 4-8 inches in height

Suppress competing weeds with mulch or cultivation; ensure steady moisture; no harvest in first season; apply phosphorus if growth appears stunted

Budding & Pre-flowering

2-4 weeks

Flower buds form at stem tips; plant reaches 12-18+ inches in height; dense foliage accumulates

Monitor for pests like aphids; harvest before flower buds open for maximum nutritional quality; first cutting typically occurs at this stage

Flowering & Bloom

1-2 weeks

Purple, pink, or white flowers appear in dense clusters; plant reaches full height; flowering indicates peak nutritional content in leaves

Some growers harvest at early bloom for optimal forage quality; allow some flowers for pollinator support; prevent seed shattering if seed harvest is intended

Seed Production & Winter Dormancy

Seed pod development 3-4 weeks; dormancy 4-6 months depending on zone

Seed pods develop; foliage begins to senesce as temperatures drop; plant enters dormancy in fall; deep taproot sustains plant through winter

Reduce water in fall/winter; avoid harvesting after late summer to allow plant to harden off; Cimarron's superior cold hardiness ensures spring regrowth; mulch in northernmost zones

Companion Planting

Plan your garden →

Plant with:

Grasses (timothy, orchardgrass, brome) Clover species Chicory Sainfoin Birdsfoot trefoil

Avoid planting near:

Black walnut (produces juglone toxin) Crops sensitive to allelopathic effects Poorly drained areas prone to flooding

Common Pests

Early cutting before larvae mature; resistant varieties like Cimarron; beneficial insects; insecticidal soap if severe
Monitor populations; natural predators (ladybugs, lacewings); insecticidal soap; resistant cultivars; avoid over-fertilizing with nitrogen
Harvest management; resistant varieties; early detection and removal of infected plants
Monitor yellow sticky traps; manage alternate hosts; timely cutting reduces populations
Crop rotation; resistant varieties; clean seed; avoid waterlogged conditions

Uses

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Livestock Forage & Feed

Culinary

Alfalfa Cimarron is a high-protein perennial forage crop extensively used for hay, silage, and pasture for cattle, horses, sheep, and other livestock. Its superior cold hardiness makes it ideal for northern regions where standard alfalfa may not survive winters. [source]

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Human nutritional supplement

Medicinal

Alfalfa sprouts and leaves contain vitamins K, C, and minerals including calcium, magnesium, and potassium. Traditionally used in herbal medicine for detoxification and as a nutritional tonic. [source]

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Soil improvement & nitrogen fixation

Household

As a legume, Alfalfa Cimarron forms symbiotic relationships with Rhizobium bacteria in root nodules, fixing atmospheric nitrogen into the soil. This enriches depleted soils and reduces need for synthetic nitrogen fertilizers in crop rotation systems. [source]

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Pollinator support & habitat

Wildlife

Alfalfa flowers attract bees, butterflies, and other pollinators, providing essential nectar and pollen resources. Dense stands provide cover and forage for beneficial insects. [source]

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Green manure & sustainable agriculture

Craft

Alfalfa Cimarron can be grown and incorporated into soil as a green manure crop to build organic matter and fertility, supporting regenerative farming practices and reducing chemical input costs. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest at early bloom stage (bud to 10% bloom) for maximum nutritional quality in forage; typically ready for first cutting 60-90 days after planting. Cut 2-3 inches above ground to preserve growing points for regrowth. Cimarron typically yields 2-4 cuttings per season in temperate zones. Allow final fall cutting to mature for winter hardiness. For seed production, allow plants to complete full flowering and drying cycle.

Fun Facts

🌱 Alfalfa has one of the deepest root systems of any cultivated plant, with taproots reaching 10-20 feet deep, allowing it to access water and minerals far below the soil surface and making it exceptionally drought-tolerant once established.
🌱 The Cimarron variety was specifically developed through breeding programs to survive the harsh winters of the High Plains and Rocky Mountain regions, retaining viability in temperatures well below -30°F.
🌱 Alfalfa has been cultivated for over 3,000 years and is sometimes called 'the king of forages' due to its high protein content (15-25% in young growth) and exceptional nutritional value for livestock.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Full Sun Germination Mulch Perennial pH

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