Agastache x 'Black Adder' ~ Black Adder Giant Hyssop-ServeScape
Agastache x 'Black Adder' ~ Black Adder Giant Hyssop - Delivered By ServeScape
Agastache x 'Black Adder' ~ Black Adder Giant Hyssop-ServeScape
Agastache x 'Black Adder' ~ Black Adder Giant Hyssop-ServeScape
Agastache x 'Black Adder' ~ Black Adder Giant Hyssop - Delivered By ServeScape
Agastache x 'Black Adder' ~ Black Adder Giant Hyssop-ServeScape

Agastache x 'Black Adder'

Black Adder Giant Hyssop

$10.46
/
Size

Don't Forget To Add These for Your Plants:

**Dormancy Note - This plant is currently dormant for the winter! It is available for purchase! Your delivered plant may be dormant, or showing very little top growth. However, you can still plant! These plants are putting all their energy into root production, so they will be ready to thrive in the spring! If you have any issues with your plant the following peak season, you can fill out our return request form to request a replacement plant.

Black Adder Giant Hyssop, also known as Agastache 'Black Adder', is a perennial plant that is known for its striking, dark blue-purple flowers and its attractiveness to pollinators.

This plant typically grows to a height of 2-3 feet with a similar spread. It prefers full sun and is adaptable to a variety of soil conditions, but it thrives best in well-drained, fertile soils. Black Adder Giant Hyssop is also drought-tolerant once established, making it a great choice for xeriscaping or low-water gardens.

The flowers of Black Adder Giant Hyssop are dark blue-purple and appear on tall spikes from midsummer to early fall. The leaves are aromatic and have a minty fragrance when crushed.

Type: 

Perennial

Orgins:

N. America

Height: 

2' - 3'

Spread: 

1.5' - 3'

Spacing: 

1.5'

USDA Hardiness Zone: 

5 - 9

Culture: 

Full Sun, Part 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, Borders, Woodland Gardens, Naturalized Areas, Foundational Plantings, and Containers.

COMPANION PLANTS: Coneflower, Daylily, Russian Sage

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

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

Size Chart
Agastache x 'Black Adder' ~ Black Adder Giant Hyssop-ServeScape

"Keep going and growing, plant joy"

Mario Cambardella
Founder, CEO

Free delivery

Unlock free standard delivery on purchases worth $200 or more. Treat yourself to your favorite items and let us take care of the delivery costs.

Guarantee

You can trust us to deliver the best quality plants. If, for any reason, your plant doesn't survive within the first 48 hours of purchase, we'll provide a free replacement.

1-Click Installation

Skip the hassle of sourcing, contacting and managing 3rd party landscape contractors. Let ServeScape's vetted installation specialists install your project for you.

You may also like

Recently viewed

Back to Butterfly Garden