Photo by Melody

PlantFiles: Hyssop
Agastache 'Purple Haze'

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Agastache (ah-gas-TAH-kee) (Info)
Cultivar: Purple Haze

4 vendors have this plant for sale.

6 members have or want this plant for trade.


24-36 in. (60-90 cm)

18-24 in. (45-60 cm)

USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade


Bloom Color:

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
Average Water Needs; Water regularly; do not overwater
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; sow indoors before last frost

Seed Collecting:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds

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to view:

By Marilynbeth
Thumbnail #1 of Agastache  by Marilynbeth

By Marilynbeth
Thumbnail #2 of Agastache  by Marilynbeth

By Marilynbeth
Thumbnail #3 of Agastache  by Marilynbeth

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Thumbnail #4 of Agastache  by Marilynbeth

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Thumbnail #5 of Agastache  by Marilynbeth

By onewish1
Thumbnail #6 of Agastache  by onewish1

By onewish1
Thumbnail #7 of Agastache  by onewish1


4 positives
No neutrals
No negatives

Gardeners' Notes:

Positive coriaceous On May 29, 2014, coriaceous from ROSLINDALE, MA wrote:

This is a great ornamental perennial as well as an herb, tough, adaptable, and exceptionally long-blooming. The lavender-violet corolla color is a little deeper than 'Blue Fortune', and instead of a dense, bottle-brush inflorescence, the flowers are more loosely spaced along a much longer spike. The stems and leaves have a variable purple tint (varying from one season to the next), and the leaves are smaller than those of the other hardy agastaches. All of these features make this a more attractive plant than 'Blue Fortune', in my eyes. None of them is captured in the photos.

I also like the foliage fragrance. Bees and butterflies like the flowers, too.

Long-lived and hardy here (Boston Z6a) in half-day sun and ordinary loamy garden soil (good drainage but not rock garden conditions). Blooms from late June till frost.

Stems are tall (3-5') and need no staking.

I have observed no self-sowing.

Positive Lupine12 On Jan 3, 2009, Lupine12 from Napoleon, OH (Zone 5b) wrote:

This is a great plant. 2007 was my first year to grow it and it bloomed from late June to frost.

Positive montsho On May 14, 2008, montsho from Tracy, CA (Zone 9b) wrote:

This plants flowers are a vivid lavendar-purple that a photo cannot do justice to. This is my first year growing it. At this rate it is going to be my favorite agastache. I like that I can use the leaves for tea as well!

Positive Marilynbeth On Jul 18, 2007, Marilynbeth from Hebron, KY wrote:

Love it! Beautiful!


Growing great still as of now. First year planing in 2007.


This plant has been said to grow in the following regions:

Elk Grove, California
Menifee, California
Bristol, Connecticut
Augusta, Georgia
Hebron, Kentucky
Roslindale, Massachusetts
Berea, Ohio
Ravenna, Ohio
Columbia, South Carolina
Enumclaw, Washington

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