Agastache nepetoides(L.) Kuntze

Yellow Giant Hyssopcatnip giant hyssopyellow giant hyssop

WFO wfo-0000904334 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Agastache nepetoides, photographed by Elizabeth Axley
fig. a Elizabeth Axley, CC BY 4.0 / 2022-02-01 / obs. 178016807
Agastache nepetoides, photographed by Robert Hoard
fig. b Robert Hoard, CC0 1.0 / obs. 170451805
Agastache nepetoides, photographed by Whitney Mattila
fig. c Whitney Mattila, CC BY 4.0 / obs. 173672676
Agastache nepetoides, photographed by Whitney Mattila
fig. d Whitney Mattila, CC BY 4.0 / obs. 173673053
Agastache nepetoides, photographed by botanygirl
fig. e botanygirl, CC BY 4.0 / obs. 159727432
Agastache nepetoides, photographed by Robert Hoard
fig. f Robert Hoard, CC0 1.0 / obs. 159072858
Agastache nepetoides, photographed by Thomas Koffel
fig. g Thomas Koffel, CC BY 4.0 / obs. 154278581
Agastache nepetoides, photographed by Robert Hoard
fig. h Robert Hoard, CC0 1.0 / obs. 108414474

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 22 botanical countries

Regions where Agastache nepetoides is native: Alabama, Arkansas, Connecticut, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Maryland, Massachusetts, Minnesota, Missouri, Nebraska, Oklahoma, Ontario, Québec, South Dakota, Tennessee, Texas, Vermont, Wisconsin AlabamaArkansasConnecticutGeorgiaIllinoisIndianaIowaKansasKentuckyMarylandMassachusettsMinnesotaMissouriNebraskaOklahomaOntarioQuébecSouth DakotaTennesseeTexasVermontWisconsin
Native distribution of Agastache nepetoides, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Alabama ALA NORTHERN AMERICA
Arkansas ARK
Connecticut CNT
Georgia GEO
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Maryland MRY
Massachusetts MAS
Minnesota MIN
Missouri MSO
Nebraska NEB
Oklahoma OKL
Ontario ONT
Québec QUE
South Dakota SDA
Tennessee TEN
Texas TEX
Vermont VER
Wisconsin WIS

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 151 in flower of 201 examined

Peak flowering in Aug. Each bar is the share of Agastache nepetoides observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 151 of 201 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 7 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 4 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Hyssopus nepetoides L.
  • Lophanthus nepetoides (L.) Benth.
  • Nepeta altissima Schrank
  • Vleckia nepetoides (L.) Raf.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.