Alpine Sainfoin (Hedysarum hedysaroides)

Alpine Sainfoin

Hedysarum hedysaroides

It carpets alpine slopes with pink blooms, a tough mountain beauty. Perennial herbaceous legume; common name: Alpine Sainfoin.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; tolerates intense alpine UV exposure
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Watering Keep soil evenly moist in growing season; drought-tolerant once established
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Temperature Hardy to subzero alpine temperatures; avoids extreme summer heat above 28°C
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Characteristics

  • Leaf: Pinnately compound leaves with 5–11 oval leaflets, gray-green and slightly hairy
  • Flower: Dense racemes of pink to pale purple pea-like blooms
  • Stem: Slender, trailing or ascending stems with fine pubescence
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Care Guide

Watering

Keep soil slightly moist; avoid waterlogging in heavy clay soils

Fertilization

Diluted low-nitrogen feed once every 6 weeks. Use a balanced, diluted organic feed to avoid over-fertilizing sensitive roots

Eggshell powder topdressing:Crush clean, dried eggshells into fine powder; sprinkle lightly on soil surface to boost calcium levels without over-fertilizing
Pruning
  • Deadhead spent blooms to encourage extended flowering through late summer
  • Trim back faded foliage in late autumn to tidy growth and prevent disease overwintering
  • Divide overcrowded clumps in early spring to maintain plant vigor
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: No documented toxicity to cats per ASPCA

Humans: No documented toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental alpine groundcover; forage for mountain livestock