Photo by Melody

PlantFiles: Yellow Giant Hyssop
Agastache nepetoides

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Agastache (ah-gas-TAH-kee) (Info)
Species: nepetoides (nep-et-OY-deez) (Info)

3 vendors have this plant for sale.

9 members have or want this plant for trade.


4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)

18-24 in. (45-60 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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

Unknown - Tell us

Bloom Color:
Pale Yellow

Bloom Time:
Late Summer/Early Fall

Grown for foliage

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

Soil pH requirements:
Unknown - Tell us

Patent Information:

Propagation Methods:
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive DiOhio On Jan 30, 2013, DiOhio from Corning, OH (Zone 6a) wrote:

I have been trying to ID this plant for years and just found out what it was. I have at least one wild plant growing in the briers, bushes and weeds along the road frontage. The plant is about 8 feet tall and 3 feet wide ! I will definitely be collecting seeds this year to try to grow more in my gardens. It's a beautiful plant, and if the insects and hummers love it, all the better.

Neutral berrygirl On Mar 18, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

Tall to 7' - Plant 24" apart. z5-10. Equally good in the border, and as a candidate for container growing. The better the drainage the happier the plant. Attractive to hummingbirds and butterflies, with mint scented foliage.


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

Derby, Kansas
Midland, Michigan
Frenchtown, New Jersey
New Milford, New Jersey
Brooklyn, New York
Glouster, Ohio
Bethlehem, Pennsylvania
Pipersville, Pennsylvania
North Augusta, South Carolina
Leesburg, Virginia

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