Sunset Hyssop
Photo by Charlie McDonald, Public domain

Threadleaf Giant Hyssop

Agastache rupestris


ZONE HARDINESS
1 2 3 4 5 6 7 8 9 10 11
SPACE REQUIREMENTS
1" 50" 100"
HEIGHT REQUIREMENTS
1" 50" 100"
SUN REQUIREMENTS
1 50 100

The flowers are orange with purple calyxes, giving it the common name of sunset hyssop, leaves are fragrant, smelling of anise. Drought tolerant, heat tolerant. The use of sand or gravel for mulch can help for better drainage. A short lived perennial, this plant is a favorite of hummingbirds.

This plant is listed as beneficial to pollinators in the book, “100 Treasure Valley Pollinator Plants”. https://gardentronic.com/blog/one-hundred-treasure-valley-pollinator-plants/


We are always looking to improve our site.
Suggestions or comments on this information?

PLANT DETAILS


NAME
Threadleaf Giant Hyssop, Licorice Mint, Sunset Hyssop
TYPE
Perennial
HEIGHT
18" - 30"
SPACING
12" - 18"

ZONE HARDINESS
5-8

ENVIRONMENTAL REQUIREMENTS
Well-drained soils are necessary for this plant to survive the winter.

SUN REQUIREMENTS
Part sun to full sun

ΒLOOM TIME
Mid Summer to Late Fall