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Foxglove self-sows under good conditions.

D. ambigua is attractive planted in groupings.

Pale yellow flowers with brown spotting or veining characterize D. ambigua.

Scrophulariaceae

Stalks of lanceolate leaves develop one-sided racemes of tight buds that unfurl into wide, campanulate yellow flowers about 2 inches long with small brown veining on the inside.

Plant Type: perennial

Plant Form or Habit: upright/vertical

Plant Use: Back of the border, or in the center of a bed.

Propagation:

seed
division

Flower Color:

yellow

Bloom Period:

early summer
mid-summer

Width: Minimum: 20 inches     Maximum: 24 inches

Foliage Texture: medium

USDA Hardiness Zone: 4

Water Requirements: average

Additional Comments: Also called D. grandiflora. Native to Europe. Attracts hummingbirds. The botanical name stems from the Latin word for finger — digitus — a description of the shape of the flower. Can be biennial or short-lived perennial. All parts of this plant are poisonous.