How to Grow Forage Legumes (Alfalfa & Clover)
Forage Legumes (Alfalfa & Clover)
Medicago sativa (alfalfa) and Trifolium spp. (clover)
grassForage legumes are nitrogen-fixing plants used primarily as livestock feed and soil amendments. Alfalfa (lucerne) is a deep-rooted perennial offering high protein content, while clovers are versatile nitrogen-builders ideal for pastures and cover cropping. Together they improve soil fertility and provide nutritious, sustainable forage.
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Example Forage Legumes (Alfalfa & Clover) timeline · Pittsburgh, PA (Zone 6b)
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Plant Forage Legumes (Alfalfa & Clover)
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Forage Legumes (Alfalfa & Clover)
Around Oct 14≈ 180 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Alfalfa thrives in zones 3-8; clovers adapt to zones 2-9 depending on variety
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Germination & Seedling
2-4 weeksTiny cotyledons emerge in 5-10 days; delicate first leaves unfold. Alfalfa develops initial taproot while clover spreads fibrous roots.
Keep soil consistently moist but not waterlogged. Protect from heavy grazing or mowing until plants reach 6-8 inches tall. Avoid herbicides during this vulnerable phase.
Vegetative Growth
6-12 weeksPlant builds leaf mass and root system. Alfalfa develops characteristic trifoliate leaves; clover establishes dense canopy. Nitrogen-fixing nodules form on roots.
Allow establishment phase (6-8 weeks) before first grazing or cutting. Monitor for pest populations. Ensure adequate moisture during dry spells.
Branching & Stem Development
4-6 weeksAlfalfa stems lengthen with multiple branch points; clover plants become bushier with flower buds forming at leaf axils.
This is optimal harvest timing for forage quality and regrowth. Cut before 1/10 bloom stage for best nutrition.
Flowering & Bloom
2-4 weeksPurple (alfalfa) or white/red (clover) flower clusters appear. Peak protein content but declining digestibility as plant matures.
Harvest at late bud or early bloom for best hay quality. If allowing seed production, defer harvest until flowers fully open.
Seed Set & Dormancy
4-8 weeksSeed pods develop and mature. After seed maturation, alfalfa enters dormancy period; clovers regrow or reseed naturally.
For forage use, rarely allow full seed maturity as it reduces nutritional value. For seed production, allow full ripening before harvest.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Early spring cutting before peak larvae, beneficial parasitoid wasps, resistant varieties like Cossack and Vernal
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Resistant varieties, natural predators (ladybugs, parasitic wasps), timely cutting to reduce populations
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Crop rotation, early spring grazing, resistant clover varieties
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Early cutting, biological control with lady beetles, avoid excessive nitrogen fertilizer
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and
Resistant varieties, proper spacing for air circulation, avoid overhead irrigation, timely harvest
Uses
High-Protein Livestock Forage
CulinaryAlfalfa and clover are premium feed for cattle, horses, sheep, and goats, providing 15-22% protein and essential amino acids. They are commonly harvested as hay, silage, or fresh pasture. [source]
Soil Nitrogen Fixation
HouseholdSymbiotic Rhizobium bacteria nodules on legume roots convert atmospheric nitrogen into plant-available nitrate, reducing need for synthetic fertilizers and improving soil fertility for subsequent crops. [source]
Cover Crop & Soil Amendment
HouseholdLegume cover crops prevent erosion, suppress weeds, add organic matter when tilled under, and break pest cycles in rotational systems. Clover is especially useful for short-term improvements. [source]
Traditional Herbal & Nutritional Supplement
MedicinalAlfalfa has been used in herbal medicine for digestive health and as a nutrient-dense food supplement, containing vitamins K, A, and minerals. Clover blossoms are used in herbal teas. [source]
Pollinator & Wildlife Habitat
WildlifeAlfalfa and clover flowers provide abundant nectar and pollen for honeybees, bumblebees, and other pollinators. Dense stands offer shelter for ground-nesting birds and beneficial insects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Alfalfa: Cut at late-bud to early-bloom stage (typically 4-5 weeks after emergence) for maximum protein and digestibility; can yield 3-4 cuttings annually in good conditions. Clover: First cutting at early bloom (60-90 days), then manage for regrowth. For hay, cut in morning after dew dries to reduce leaf loss. For pasture, allow 4-6 inches regrowth before next grazing. Seed production requires allowing plants to flower and mature fully (late summer/fall harvest).
Fun Facts
- 🌱 Alfalfa's root system can penetrate 10-20 feet into the soil, accessing water and minerals unavailable to shallow-rooted plants, making it exceptionally drought-tolerant once established.
- 🌱 A single alfalfa plant can support thousands of nitrogen-fixing Rhizobium bacteria nodules, fixing up to 150-200 lbs of nitrogen per acre annually without chemical fertilizers.
- 🌱 Clover flowers in a single pasture can attract and feed hundreds of honeybees simultaneously; a strong clover stand is worth more to beekeepers than some cash crops.
Gardening Terms
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