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perennial

Anise hyssop

Agastache foeniculum

Climate-suitable non-native

Growing guidance

Horticultural figures below are practitioner estimates for planning, pending expert review. The botanical record further down is sourced and verifiable.

Current-climate suitability

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Future-climate resilience

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Sun

Full sun

Soil moisture

free-draining, average

Heat tolerance

Up to about 42°C

Cold tolerance

Down to about -30°C

Waterlogging tolerance

1/5

Drought tolerance

4/5

Mature size

0.7–1.2 m tall, 0.5 m spread

Seasonal interest

Summer to autumn · Lavender blue

Maintenance

low

Wildlife supported

General wildlife value 5/5 (verified species relationships are shown only where structured data exists)

Known risks or warnings

Self-seeds freely in open soil.

Toxicity: none

Verified botanical record

Accepted scientific name
Agastache foeniculum (Pursh) Kuntze
Family
Lamiaceae (Lamiales)
Rank and status
species · accepted
GBIF record
Taxon 2926406

Recorded native range: Alberta, Manitoba, Northwest Territories, Ontario, Saskatchewan

Recorded as introduced in: Austria, British Columbia, Connecticut, Delaware, Germany, Kentucky, New Brunswick, New Hampshire, New York, Pennsylvania, Quebec

Ranges are exactly as recorded in the GBIF source checklists and may be incomplete for widely cultivated species.

Agastache foeniculum (syn. Agastache anethiodora (Nutt.) Britton), commonly called anise hyssop, blue giant hyssop, Fragrant giant hyssop, or the lavender giant hyssop, is a species of perennial plant in the mint family. The plant is native to much of northern North America. It is tolerant of deer and drought, and is visited by many pollinators.

Description from Wikipedia — Agastache foeniculum (CC BY-SA), shortened and unedited in substance.

Native status and geographic context

  • United Kingdom: climate-suitable
  • United States: native
  • Australia: climate-suitable

Native status is never inferred from climate similarity. Plants restricted or invasive in a jurisdiction are excluded from recommendations there.

Demonstration data. Climate, plant and retailer records shown here are realistic samples awaiting horticultural validation and live data connections.