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Astragalus mongholicus
Mongolian Milkvetch
Astragalus mongholicus
Astragalus mongholicus, also known as Mongolian Milkvetch or Huang Qi, is a hardy perennial herb native to grasslands and slopes of Mongolia, Northern and Northeastern China, and Siberia. It is a member of the legume family (Fabaceae) and is primarily cultivated for its roots, which are highly valued in traditional medicine, particularly Traditional Chinese Medicine (TCM). The plant forms a bushy clump with pinnate leaves and produces clusters of small, yellowish, pea-like flowers in summer. It is adapted to dry, well-drained soils and full sun conditions, making it a resilient plant for appropriate climates.
CategoryDetails
Plant TypePerennial plant
Medicinal UsageMedicinal Usage
Duration to maturity4 years to harvest
Estimated Plant Lifespan5 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: animal

Notes: Primarily pollinated by bees and other insects attracted to its yellow, pea-like flowers. While it can self-pollinate, insect activity significantly increases seed set.

Watering Requirements

Method: top water

Frequency: when soil is dry to several inches deep

Notes: Astragalus mongholicus is drought-tolerant once established. It is crucial to ensure excellent drainage to prevent root rot, as it dislikes consistently wet feet. Water sparingly in cooler, dormant periods.

Humidity Requirements

Level: low to moderate

Maintenance: None typically required; it tolerates average outdoor humidity and prefers drier conditions over high humidity.

Care InstructionsThe most critical care instruction for Astragalus mongholicus is to provide exceptionally well-drained soil, especially in regions with high rainfall or heavy clay soils. Amend heavy soils with sand and gravel to improve drainage and aeration. Avoid overwatering. While not strictly necessary, deadheading spent flowers can encourage plant vigor, though the primary focus for cultivation is usually the root.
Alternative NamesAstragalus purdomii, Astragalus membranaceus, Astragalus propinquus, Astragalus mongolicus

Cultivars

Achillea millefolium
common yarrow
Achillea millefolium
Tolerates similar dry, sunny conditions and well-drained soil. Its fibrous root system generally occupies different soil layers than the deeper taproot of Astragalus, minimizing direct competition while sharing environmental needs.
Taraxacum officinale
common dandelion
Taraxacum officinale

This common weed has a strong taproot and can aggressively compete with Astragalus mongholicus for water and nutrients, especially in disturbed or cultivated garden beds.

Plantago major
greater plantain
Plantago major

A resilient weed that forms dense rosettes, effectively shading out smaller seedlings and competing for moisture and soil nutrients, particularly in compacted soils.

Aphids

Small, soft-bodied insects that cluster on new growth, leaves, and stems, sucking plant sap. Symptoms include stunted growth, yellowing or curling leaves, and sticky honeydew, which can lead to sooty mold.

Spider Mites

Tiny arachnids that feed on plant cells, usually on the underside of leaves. Symptoms include tiny yellow or white stippling (dots) on leaves, fine webbing, and overall decline in plant vigor, especially in hot, dry conditions.

Steps:

    • For seed propagation, seeds often require scarification (e.g., lightly nicking the seed coat with a knife or soaking in hot water for 24 hours) to break dormancy.
    • Some sources also recommend cold stratification (placing seeds in a moist medium in a refrigerator for 4-6 weeks) to improve germination rates.
    • Sow seeds in a well-draining seed-starting mix in early spring, barely covering them with soil.
    • Maintain consistent moisture until germination occurs, which can be erratic.
    • For root division, carefully dig up a mature plant (typically 3-4 years old or more) in early spring or fall.
    • Gently separate sections of the root crown, ensuring each section has healthy roots and at least one bud or stem.
    • Replant divisions immediately into well-drained soil at the same depth as the original plant.
    • Water thoroughly after transplanting to help establish the new plants.

Compost

Improves soil structure, drainage, and provides a slow release of essential nutrients, supporting overall plant health and root development.

Neem Oil

A natural, broad-spectrum insecticide and fungicide effective against aphids, spider mites, and other common garden pests, as well as some fungal issues.

Mycorrhizal Fungi Inoculant

Enhances the root system's ability to absorb water and nutrients, promoting stronger, healthier growth and increased resilience to stress.

Well-rotted Manure

Enriches soil fertility and organic matter content, contributing to a robust growing environment for Astragalus roots.