SafePlants

Transparent Milkvetch (Astragalus diaphanus)

Transparent Milkvetch, scientifically known as Astragalus diaphanus, is a fascinating plant with several interesting characteristics and considerations. It is also referred to as John Day Milk-Vetch.

Considerations for Pets and Children

• Several species within the Astragalus genus are known to be poisonous.
• The plant produces semi-transparent pods.

Taxonomy and Nomenclature

• Scientific Name: Astragalus diaphanus Douglas ex Hook.
• Family: Fabaceae (Pea Family), Faboideae subfamily
• Common Names: Transparent Milkvetch, John Day Milk-Vetch
• Synonyms/Varieties:
  • Astragalus diaphanus var. diaphanus
  • Astragalus diaphanus var. diurnus

Distribution and Habitat

• The Transparent Milkvetch is native to regions including Oregon and Washington, particularly the Columbia River Gorge.
• Its known distribution includes Washington.

Morphological Characteristics and Growth Habits

• The plant has light yellow flowers in spikes followed by semi-transparent pods.

Quirky Facts

• The fruit is a bladdery legume pod which dries to a thin, almost transparent papery texture.

Growing conditions

• Requires full sun exposure (Sole pieno).
• Young plants may need light protection from wind or cold during the winter.
• In windy climates, young trees may need to be secured to stakes.

Interactions with Other Organisms

• E. astragali has been found to interact with milkvetch seedlings.
• It can be fatally poisonous to cattle on rangeland.

Further Information

• Dave's Garden
• Garden Guides
• Discover Life
• Oregon Flora Project