General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Dry Mesic
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 9b
Plant Height: 36 - 42 inches
Plant Spread: 18 inches
Leaves: Unusual foliage color
Other: Gray-green
Flowers: Showy
Flower Color: Orange
Other: Lavender calyxes.
Flower Time: Late spring or early summer
Late summer or early fall
Other: Cut back in late summer to encourage fall rebloom.
Suitable Locations: Xeriscapic
Uses: Culinary Herb
Cut Flower
Dried Flower
Will Naturalize
Suitable as Annual
Wildlife Attractant: Bees
Resistances: Deer Resistant
Rabbit Resistant
Humidity tolerant
Drought tolerant
Propagation: Seeds: Can handle transplanting
Other info: Good self-seeder
Propagation: Other methods: Division
Containers: Suitable in 3 gallon or larger
Needs repotting every 2 to 3 years
Needs excellent drainage in pots
Awards and Recognitions: Other: 1997 Plant Select Winner

Common names
  • Threadleaf Giant Hyssop
  • Sunset Hyssop
  • Licorice Mint
  • Anise Hyssop

Threadleaf Giant Hyssop (Agastache rupestris) was a featured
Plant of the Day for May 25, 2019.
This plant is tagged in:
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  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Jan 23, 2013 9:36 AM concerning plant:
    This beautiful Agastache is a xeric plant that likes a lean, well drained soil along with lots of summer heat. The natural range is from southeastern New Mexico to central and south-central Arizona and into northern Chihuahua, Mexico.

  • Posted by Marilyn (Kentucky - Zone 6a) on Apr 19, 2013 11:55 PM concerning plant:
    One of my favorite Agastaches! The leaves have a wonderful scent, the color of the flowers and the leaves are beautiful and the combination of the two is stunning! Over the years, I've planted it into the ground and into containers around my yard. I love it!

    A 1996 High Country Gardens introduction.
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Feb 23, 2012 4:42 PM concerning plant:
    For most of the summer, Agastache ruprestris is covered in brilliantly-colored flowers that attract hummingbirds, butterflies and bees. And Sunset hyssop fills the air with a great aroma similar to root beer or licorice.

    You can use sunset hyssop leaves to make tea.

  • Posted by Marilyn (Kentucky - Zone 6a) on May 25, 2013 6:36 AM concerning plant:
    "Threadleaf giant hyssop (Agastache rupestris), also known as Licorice Mint, is a wildflower of the mint family (Agastache) native to the mountains of Arizona, New Mexico, and Chihuahua, Mexico. Popular in xeriscaping because of its heat tolerance and ability to thrive in dry, nutrient-poor soil, it is often planted in a containers or as a border flower and used to attract hummingbirds. Displaying gray-green stems and leaves while dormant, its orange flowers with purple buds bloom forth from mid-summer until the fall; if crushed the petals exude a pleasant scent."

    Taken from wikipedia's page at:
Discussion Threads about this plant
Thread Title Last Reply Replies
Untitled by Marilyn Nov 24, 2011 5:33 PM 8
wish I was.... by sandnsea2 Jun 19, 2013 7:54 AM 2

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