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Tall Larkspur

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description Tall Larkspur Overview

Tall Larkspur, scientifically known as Delphinium exaltatum, is a herbaceous perennial wildflower native to the eastern and central United States. Belonging to the buttercup family, Ranunculaceae, it naturally occurs in dry, rocky woodlands and prairies. The plant is characterized by its erect, branching stems that can reach heights of up to six feet, supporting dense, terminal spikes of deep blue to purple spurred flowers that bloom in mid-summer. It is planted in woodland gardens and native landscaping, though all parts of the plant are toxic if ingested due to the presence of alkaloids.

help Tall Larkspur FAQ

Is Tall Larkspur poisonous to animals?

Yes, like all members of the genus Delphinium, Tall Larkspur (Delphinium exaltatum) contains toxic diterpenoid alkaloids that can be harmful or fatal to livestock, particularly cattle, if ingested. Larkspur poisoning is a serious concern on western US rangelands where related tall larkspur species grow abundantly in grazing areas.

Where does Tall Larkspur grow in the wild?

Tall Larkspur (Delphinium exaltatum) is native to eastern North America, where it grows in rich, moist soils of open woodlands, woodland edges, and roadside banks. It is one of the few Delphinium species adapted to eastern climates, as most North American larkspurs are associated with western mountain meadows.

How tall does Tall Larkspur grow?

As the name suggests, Tall Larkspur can reach heights of 4 to 6 feet, making it one of the tallest native larkspurs in eastern North America. Its long spires of deep purple to violet-blue flowers open sequentially from bottom to top during a mid-to-late summer bloom period.

Does Tall Larkspur attract hummingbirds?

Yes, the deep tubular purple flowers of Tall Larkspur are well adapted for hummingbird pollination, and ruby-throated hummingbirds are frequent visitors during its summer bloom. Long-tongued bumblebees and butterflies also visit the flowers for nectar.

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