Larkspur, Twolobe larkspur

Delphinium nuttallianum

Physical Characteristics

Delphinium nuttallianum is a PERENNIAL growing to 0.3 m (1ft). See above for USDA hardiness. It is hardy to UK zone 4. It is in flower from May to July. The species is hermaphrodite (has both male and female organs). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers moist soil.

Distribution

Western N. America - British Columbia to California.

Habitats

Cultivated Beds;

Edible Uses

None known

Medicinal Uses

Parasiticide None known

Known Hazards

All parts of the plant are toxic[172]. The plant is most toxic when it is young[200].