Images Depict Mature Plants
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.
|Mature Height:||2 to 3 Feet|
|Mature Width:||2 to 3 Feet|
|Habit:||Upright, clump forming|
|Flower Color:||Bright vivid blue|
|Flowering Season:||Mid-June through frost|
|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.|