Agastache 'Black Adder'

Hyssop or Hummingbird Mint

Please login to see pricing.

  • Aromatic mint like foliage
  • Smokey violet-blue bottle-brush flowers on 2-3 feet spikes from July until frost.
  • Deadhead spent flowers to promote additional bloom
  • Prefers poor, well drained soil in a sunny location.

Height: 2-3 ft
Spread: 2-2 ft

Zone: 6-9
Color: Violet- Blue

Characteristics & Attributes

Attracts Wildlife:

  • Attracts Pollinators
  • Attracts Butterflies


  • Cut Flower/Foliage
  • Summer Bloomer
  • Heat Tolerant
  • Mass Planting
  • Disease Resistant
  • Drought Tolerant
  • Long Blooming
  • Fragrant
  • Fall Color
  • Low Maintenance

Critter Resistance:

  • Deer Resistant


  • Full Sun

Foliage Color:

  • Green


  • Upright

Season of Interest (Flowering):

  • Fall
  • Summer

Soil Moisture:

  • Well drained soil
  • Dry Soil
  • Average Water

Plant Calculator

Determine how many plants you will need for a particular area. Just enter in your plant information and click calculate.