🌿 Astragalus
Astragalus membranaceus
herbs
perennial herbaceous
☀️ Sun
Full Sun to Partial Shade
💧 Water
Moderate
🗺️ Zones
4-9
🧪 Soil pH
6.0-7.5 (prefers sandy, well-drained alkaline soil)
📏 Spacing
12-18 in. apart, 24-30 in. between rows
⏱️ Maturity
2-3 years (from seed); roots harvested after 2-3 years for medicinal quality
Key:🤝 Grows well together❌ Keep apart☀️ Sun needs💧 Water🗺️ Hardiness zone
🤝 Companions (5)
Calendula attracts hoverflies and lacewings that prey on astragalus pests; its shallow roots don't interfere with astragalus's deep taproot.
Comfrey mines deep minerals with its taproot and provides nutrient-rich mulch (chop-and-drop) that feeds astragalus; complementary root depths.
Echinacea attracts pollinators that benefit astragalus flowering; both are deep-rooted perennials that thrive together in herb gardens.
Yarrow attracts beneficial insects that protect astragalus from pests; both are drought-hardy perennials for the medicinal herb garden.
Chamomile improves soil calcium levels that astragalus needs; its low-growing habit doesn't compete with astragalus's taller form.
⚠️ Keep Apart (0)
No known enemies listed.
🛒 Buy Seeds & Plants
Baker Creek Heirloom Seeds
Johnny's Selected Seeds
Botanical Interests
True Leaf Market
Burpee
Territorial Seed Company
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