Agastache ‘Blackadder’

giant hyssop

hummingbird mint

Outstanding Qualities

Flower spikes of dark red-purple peppered with tiny mauve blooms are the highlight of this clumping perennial. These are a favorite of hummingbirds, butterflies and bees throughout the summer and early fall. The blue-green leaves are aromatic with a anise or licorice scent.

Colors & Combos

Great Color Contrasts: cream, gold, orange, red, white

Great Color Partners: black, bronze, burgundy, lavender

Culture Notes

Agastache ‘Black Adder’ grows best in full sun and average to sandy soil, but it must be well-drained. Occasional watering - every 10 to 14 days - will keep this plant fresh looking during dry periods.

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Quick Facts

Plant Type: upright perennial

Foliage Type: deciduous

Plant Height: 3 ft. 0 in. (0.91 m.)

Plant Width/Spread: 2 ft. 0 in. (0.61 m.)

Hardiness: USDA Zones 6 to 9

Flower Color: purple

Sun/Light Exposure: full sun

Water Requirements: occasional watering