Agastache 'Black Adder' Hummingbird Mint



Agastache 'Black Adder' has smoky-lilac flowers that open from dark purple buds. Its deep green foliage is very fragrant. Erect, bushy plants bear spikes of showy tubular flowers over a long season. Also called Hummingbird Mint, Agastache 'Black Adder' does not require staking as long as the soil is not too rich. Its lush spikes of purple blooms make Agastache 'Black Adder' the butterflies' favorite hummingbird mint in our nursery.

Agastache prefer full sun and require well-drained soil. Established plants are tolerant of drought conditions. Suitable for an herb garden or mixed border, they are highly attractive to pollinators, hummingbirds, and butterflies. Deer resistant.


  • Common Names: Mexican Hyssop / Hummingbird Mint
  • Zones: 6-9
  • Light Requirements: Full Sun to Light Shade
  • Soil Preference: Well-drained
  • Height at Maturity: 36
  • Width at Maturity: 30
  • Bloom Color: Purple
  • Bloom Time: Spring to fall
  • Foliage Color: Green

Special Features

  • Attracts: Butterflies. Hummingbirds. Pollinators.
  • Tolerates: Deer. Coastal Conditions.
  • Other Features: Cut Flower. Fragrant.

Care and Growing Tips

Check out our blog for more gardening tips!

Shipping Info

 Spring 2023 shipping schedule:

Zones 9, 10: Starting Mon. March 20th
Zone 8: Starting Mon. March 27th
Zone 7: Starting Mon. April 3rd
Zone 6: Starting Mon. April 17th
Zone 5: Starting Mon. May 1st
Zones 2, 3, 4: Starting Mon. May 8th

If you'd like to receive your plants now, you can request it in the 'shipping requests' box on the order or email us. (Please note that we will not ship dormant plants, and we do not offer any sort of guarantee for plants overwintering.)

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We ship via UPS & USPS (the Post Office), and their ship rates are automatically generated through our site. We do not profit on shipping costs. We are working with these providers to get our customers the best rates possible.

All ship times are subject to change if extreme weather conditions are present here at the nursery or at the shipping destination.

Please note: Depending on the time of year, the foliage of the plants may be trimmed to fit into our shipping boxes. This could delay the flowering of the plant, but many perennials actually benefit from being cut back.

We are currently not able to ship to Puerto Rico, Hawaii, and outside of the US.