Zone 5 · winter lows -20°F to -10°F
Agastache for Zone 5
44 Agastache varieties rated hardy through Zone 5, ranked by how many gardeners actually grow them. Zone 5 is classic northern gardening with a reliable snow blanket.
The Agastache that thrive in Zone 5
#1 most savedAnise Hyssop
Agastache foeniculum
#2 most saved'Blue Fortune' Anise Hyssop
Agastache f neki hybrid 'Blue Fortune'
#3 most savedHummingbird Mint
Agastache x hybrida

Korean Mint
Agastache canagaria

Hummingbird Mint Mix
Agastache x hybrida 'Mix'

Kudos Ambrosia Anise Hyssop
Agastache foeniculum 'Kudos Ambrosia'

Blue Boa Hyssop
Agastache fennelagastache 'Blue Boa'

Poquito Butter Yellow Anise Hyssop
Agastache foeniculum 'Poquito Butter Yellow'

Sunrise Blue Hyssop
Agastache foeniculum 'Sunrise Blue'

Poquito Lavender Hyssop
Agastache foeniculum 'POQUITO Lavender'

Rosie Posie Anise Hyssop
Agastache foeniculum 'Rosie Posie'

Kudos Red Hummingbird Mint
Agastache foeniculum 'Kudos Red'

Golden Jubilee Anise Hyssop
Agastache foeniculum 'Golden Jubilee'

Pink Anise Hyssop
Agastache foeniculum 'Pink Pearl'

White Anise Hyssop
Agastache foeniculum 'Sunrise White'

Kudos Mandarin Hyssop
Agastache rugosa 'Kudos Mandarin'

New Mexico Giant Hyssop
Agastache pallidiflora

Hummingbird Mint Collection Anise Hyssop
Agastache foeniculum 'Hummingbird Mint Collection'

Giant Hyssop Globetrotter Agastache
Agastache foeniculum 'Globetrotter'

Kudos Coral Hyssop
Agastache foeniculum 'Kudos 'Coral''

Violet Anise Hyssop
Agastache foeniculum 'Violet'

Kudos Yellow Anise Hyssop
Agastache foeniculum 'Kudos Yellow'

Bolero Anise Hyssop
Agastache foeniculum 'Bolero'

POQUITO Dark Blue Anise Hyssop
Agastache foeniculum 'POQUITO Dark Blue'
Showing the 24 most-saved of 44 Zone 5–hardy Agastache varieties. See the full Agastache list →
Agastache in Zone 5
Will Agastache survive a Zone 5 winter?
44 of the 63 Agastache varieties in the Sow catalog are rated hardy through Zone 5, where winter lows reach -20°F to -10°F. Hardiness is per-variety, not per-genus — the plants listed above are the ones that hold up; others in the genus are not rated for this zone.
When should I plant Agastache in Zone 5?
In Zone 5 the last spring frost typically lands around early May and the first fall frost around early October. Planting after the last frost — or in early fall, so roots establish before the ground cools — gives the best establishment. Each plant page lists its own planting months.
Which Agastache is best for Zone 5?
Start at the top of the list above: it is ranked by how many gardeners actually save and grow each variety, which is a strong real-world reliability signal. Then narrow by your sun exposure and the mature size that fits the bed.
Keep exploring
All Agastache
Agastache in other zones
See Agastache in your Zone 5 yard
Snap a photo of your space and Sow places these varieties in it at true mature size — then keeps the care schedule for everything you plant.