General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Minimum cold hardiness: Zone 6a -23.3 °C (-10 °F) to -20.6 °C (-5 °F)
Plant Height: 20 - 24 inches
Plant Spread: 14 inches
Leaves: Fragrant
Flowers: Showy
Fragrant
Flower Color: Blue
Other: Light blue with deep purple bracts, Deep indigo-blue, Blue-violet
Flower Time: Summer
Late summer or early fall
Fall
Other: Midsummer to mid Fall
Suitable Locations: Xeriscapic
Uses: Cut Flower
Dried Flower
Will Naturalize
Suitable as Annual
Wildlife Attractant: Bees
Butterflies
Hummingbirds
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: 2012 Fleuroselect Gold Medal

Image
Common names
  • Anise Hyssop
  • Agastache

'Astello Indigo' was a featured
Plant of the Day for May 16, 2019.
Photo Gallery

Courtesy Fleuroselect, used with permission

Credit: Fleuroselect, used with permission
Location: Lutz, FL
Date: 2013-07-14

 Photo Courtesy of Select Seeds. Used with permission.
  • Uploaded by Joy
Comments:
  • Posted by jvdubb (48036 MI - Zone 6b) on Aug 25, 2014 7:46 PM concerning plant:
    I winter-sowed this plant in winter 2012-2013. Excellent germination. I planted out four plants. They all were about 20 inches tall, lush, and prolific bloomers. Bees love the amazing blue blooms. They produced an overwhelming amount of seeds. I did not want them to reseed because this is a hybrid, but I also thought the birds would benefit from the seeds in winter.

    All four plants survived winter 2013-2014, but the plants were disappointing this summer. They got leggy, over 30 inches, and sparse. Definitely not attractive. I was quite disappointed.

    I will winter sow them again this winter and possibly treat them as annuals. Final verdict TBD
  • Posted by Marilyn (Kentucky - Zone 6a) on Aug 24, 2014 10:28 AM concerning plant:
    Agastache 'Astello Indigo' is a beautiful and recently introduced hybrid. Drought tolerant when established. Heat and humidity tolerant. Grow in well-drained soil. Can be grown from seed.

    A beautiful sight to see when three or more 'Astello Indigo' are planted together.

    An impressive Agastache, it won the 2012 Fleuroselect Gold Medal.
Plant Events from our members
dnrevel On May 29, 2021 Transplanted
Planted in front yard dahlia garden. NOTE, May need a "Chelsea Chop" to prevent legginess.
dnrevel On April 15, 2021 Seeds germinated
Good germination & growth in May to June. Winter Sown.
dnrevel On March 18, 2021 Seeds sown
Winter Sowed, Swallowtail Garden seed
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