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Astragalus

Astragalus mongholicus

Formerly Astragalus membranaceus · also Astragalus propinquus

Also known as Mongolian Milkvetch

herbaceous☀️ full sun💧 low water❄ Hardy: Zone 4a – Zone 8b

Climate Match for your location

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Astragalus membranaceus is a nitrogen-fixing perennial herb with delicate pinnate leaves and small pale yellow flowers, widely used in traditional Chinese medicine for immune support. It thrives in dry conditions and poor soils, making it valuable for permaculture systems.

Why grow it

Astragalus membranaceus establishes readily in marginal soils where many nitrogen-fixing perennials struggle, making it useful for soil building in degraded areas. Compared to other legumes in permaculture systems, it tolerates drier conditions and requires less fertility amendment once established. The plant's deep root system helps break up compacted soils while fixing atmospheric nitrogen for neighboring plants.

Watch out for

Harvest timing affects both yield and root quality, so plants should be allowed to mature fully before cutting. The plant may take two to three seasons to establish sufficient biomass for commercial-scale harvesting, requiring patience in planning. In humid climates, monitor for fungal issues on foliage, particularly if air circulation is poor.

Overview

Form
Upright
Growth Rate
moderate
Size
1.5–3′ tall × 1–2′ wide
Dormancy
deciduous
Family
Fabaceae
dynamic accumulatormedicinaledible

Native Range

Northern China, Mongolia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Harvest Season

J
F
M
A
M
J
J
A
S
O
N
D

Edible Parts

root

Season of Interest

SpringSummer

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Companion Planting

Plants well with