• Agastache Black Adder in the garden
  • Butterflies enjoying the Flowers of Agastache  Black Adder
  • Agastache black adder flowers
  • Agastache Black Adder in the wild garden

Images Depict Mature Plants

Agastache Black Adder

Agastache foeniculum 'Black Adder'

Agastache Black Adder is a reliably hardy perennial that has licorice scented foliage and is a bee, butterfly and hummingbird magnet!

Sale Price $21.95 USD
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Agastache Black Adder Plants for Sale Online

Agastache Black Adder produces numerous bottle-brush flowers of vivid Violet-blue from mid-summer to frost on a compact, rounded plant. It has been hardy for us in the ground reliably winter after winter.

Black Adder hyssop is a long-blooming selection for the middle to back of the border, featuring long wands of vivid blue-violet flowers bracts. Foliage is dark green and licorice-scented. Attractive to butterflies and hummingbirds. Flowers are excellent for cutting. Pinch in June to keep plants compact if desired.


Growzone: 6-9 Agastache Black Adder Hardiness Zones 6-9
Hardiness Zone: 6-9
Mature Height: 2 to 3 Feet
Mature Width: 2 to 3 Feet
Sunlight: Full sun
Habit: Upright, clump forming
Flower Color: Bright vivid blue
Flowering Season: Mid-June through frost
Foliage: Green
Soil Condition: Prefers dry, average to sandy soil, wont tolerate wet soil in winter
Water Requirements: Water well until established
Uses: Extremely attractive when used as a focal point in the mixed border, mass planting. Attracts pollinators and hummingbirds.

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