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Description
Agastache x 'Black Adder' ~ Black Adder Giant HyssopBlack 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
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.
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Type: |
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Orgins: |
N. America |
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Height: |
2' - 3' |
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Spread: |
1.5' - 3' |
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Spacing: |
1.5' |
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USDA Hardiness Zone: |
5 - 9 |
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Culture: |
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Bloom Color: |
Purple |
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Season of Interest: |
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.
Shipping Notes
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