Agastache x &
Agastache x &
Agastache x &

Agastache x 'Black Adder'

Black Adder Giant Hyssop

Regular price$10.72
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Black Adder Giant Hyssop is an upright long-blooming perennial with aromatic blue-green foliage.  Densely packed upright spikes sporting near-black buds open to smoky violet flowers from early summer until frost attracting butterflies and hummingbirds.  Flowers best in full sun and moist well-drained soils. 

Type: 

Perennial

Height: 

2' - 3'

Spread: 

1.5' - 3'

Spacing: 

1.5'

USDA Hardiness Zone: 

5 - 9

Culture: 

Full SunPart Sun

Bloom Color: 

Purple

Season of Interest: 

Summer, Fall

MAINTENANCE NEEDS: Low maintenance.  Crown and root rot may occur in poorly drained soils.  No serious pests or disease issues but watch for powdery mildew, wilt, and rust.  

LANDSCAPE USES:  Accents or Group Plantings, BordersWoodland GardensNaturalized Areas, Foundational Plantings, and Containers.

COMPANION PLANTS: ConeflowerDaylily, Russian Sage

IMAGES: Photo by CAJC: in the PNW, Hyssop, (2) Photo by David J. Stang, Agastache Black Adder 4zzCC BY-SA 4.0

*As plants have ranges in appearance they may not appear as the images shown.

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