How to Grow Alfalfa, Saranac (Dormant Variety)
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Alfalfa, Saranac (Dormant Variety)
Medicago sativa L.
herbSaranac is a cold-hardy, dormant alfalfa variety bred for northern climates and harsh winters. It is a perennial legume prized for hay production, pasture, and nitrogen fixation in agricultural systems. This variety enters dormancy in fall, conserving energy and surviving sub-zero temperatures.
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Example Alfalfa, Saranac (Dormant Variety) timeline · Pittsburgh, PA (Zone 6b)
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Plant Alfalfa, Saranac (Dormant Variety)
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 Alfalfa, Saranac (Dormant Variety)
Around Jun 16≈ 60 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7; specifically bred for northern climates with winter hardiness to -40°F or colder
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Get my Alfalfa, Saranac (Dormant Variety) timeline →Growth Stages
Seed Germination & Seedling
2-3 weeksTiny cotyledons emerge within 5-7 days. Seedlings develop their first true leaves and begin establishing a taproot.
Keep seedbed moist but not waterlogged. Avoid heavy traffic or disturbance. Protect from frost during establishment in early spring plantings.
Vegetative & Root Establishment
4-6 weeksPlant grows leafy stems, 4-8 inches tall. The taproot deepens significantly (can reach 6-12 feet by season end). Trifoliate leaves develop fully.
Ensure consistent moisture during this critical phase. Apply inoculant-treated seed if not done at planting. Monitor for seedling diseases.
Flowering & Hay Production
3-4 weeks per growth cyclePurple to violet flowers appear in racemes along stems. Plant reaches 18-36 inches in height depending on variety and conditions. Dormant Saranac enters flowering before transitioning to dormancy.
First cutting is typically at early bloom stage (bud to 10% bloom) for maximum forage quality. Delay cutting if poor weather prevents proper drying.
Dormancy & Winter Hardening
6-8 weeks transition; dormancy lasts through winterIn late summer/fall, the plant slows growth, yellows leaves, and enters physiological dormancy. Crowns and roots harden for winter survival. Aboveground growth ceases.
Reduce or cease cutting 4-6 weeks before first expected frost to allow carbohydrate accumulation. Avoid fall nitrogen applications. Allow plant to 'go dormant' naturally.
Spring Regrowth & Vigor
Continuous through growing seasonGrowth resumes in spring as temperatures warm. Plant regenerates from crown and root system. Leafy growth appears rapidly.
Begin cutting when new growth reaches 4-6 inches or early bud stage. Dormant varieties recover reliably after harsh winters due to cold hardiness.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Early spring cutting before larval damage; insecticidal treatment if populations exceed threshold; cultural practices like early forage removal
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Natural predators (ladybugs); insecticidal soap; tolerate low populations in dormant varieties (cold-hardy types less prone to severe aphid outbreaks)
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Resistant varieties; early cutting; sulfur dust or insecticidal treatment if needed
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Timely harvest; insecticidal treatment if populations exceed economic threshold
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Harvest management; resistant varieties; biological controls
Uses
Livestock Forage & Pasture
CulinarySaranac alfalfa is a premium hay and pasture crop for cattle, horses, sheep, and goats, providing high-quality protein (15-20%) and digestible nutrients essential for livestock production. [source]
Soil Nitrogen Fixation & Soil Improvement
HouseholdThe symbiotic relationship with Sinorhizobium meliloti bacteria fixes atmospheric nitrogen, reducing fertilizer requirements and improving soil fertility in crop rotations. [source]
Nutritional Supplement & Traditional Medicine
MedicinalAlfalfa sprouts and leaf tea are used in traditional and alternative medicine for mineral content (calcium, magnesium, potassium) and purported benefits to digestion and immune function. [source]
Agricultural Soil Amendment
CraftAlfalfa meal and green manure applications enrich organic gardens and farms with nitrogen and organic matter without synthetic fertilizers. [source]
Pollinator & Wildlife Habitat
WildlifeAlfalfa flowers attract honeybees, native bees, and other beneficial insects; alfalfa stands provide shelter and forage for pollinators and beneficial arthropods. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut at early bloom (bud to 10% flower) stage for best forage quality and protein content. Saranac produces 2-4 cuttings per growing season depending on region and rainfall. In the north, plan final cutting 4-6 weeks before first frost to allow dormancy. Allow 4-5 weeks between cuttings for adequate regrowth. Dry cut forage to 15-20% moisture for hay storage. Can be grazed or harvested for fresh forage; dormant varieties are particularly suited to grazing systems in harsh climates.
Fun Facts
- 🌱 Saranac is derived from cold-hardy breeding programs at northern universities and can survive temperatures below -40°F due to its dormancy mechanism, making it one of the hardiest alfalfa cultivars available.
- 🌱 Alfalfa can develop taproot systems exceeding 15-20 feet in depth, allowing it to tap water reserves inaccessible to shallow-rooted crops and making it extremely drought-tolerant once established.
- 🌱 A single alfalfa plant can regrow and produce forage for 7-10 years or more, making it one of the most cost-effective perennial crops for long-term pasture and hay production systems.
Gardening Terms
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