New!
 
 
Agastache x 'Black Adder'
Black Adder Giant Hyssop
- Long summer bloom
- Nearly black buds
- Aromatic leaves
- Pollinator attractor
- A hybrid resulting from a cross between A. rugosum and A. foeniculum
- Category: Perennial
- Hardiness Zone: 6-9
- Height: 2-3 ft
- Spread: 1-2 ft
- Bloom Color: Purple Shades, Red Shades
- Foliage Color: Green Shades
Purchase options for Black Adder Giant Hyssop
- Size: 1 Gallon -
- Status: Sheared and/or Dormant
- Availability: Online
$20.00
Success Starts With Soil
Fafard Premium Natural & Organic Compost
Fafard Premium Natural & Organic Compost
$12.99
Add To CartBlack Adder’s long summer bloom of red-violet flowers that pop from June through September, and anise-scented foliage are why this perennial is loved! Flowers emerge from nearly back buds. It’s upright, clump-forming habit make it great to plant along sunny borders, butterfly gardens, or along walkways. Deer resistant!
Critter Resistance
| • | Deer Resistant | 
Season of Interest (Flowering)
| • | Summer Bloomer | 
Exposure
| • | Full Sun | 
Soil Moisture
| • | Average Water | 
Growing Tips for Agastache x ''Black Adder''
Thrives in full sun. Allow the soils to dry between waterings Feed regularly in a container to promote growth and vigor.
 



