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Agastache nepetoides (Linnaeus) Kuntze. Common name: Yellow Giant-hyssop. Phenology: Jul-Sep; Sep-Oct. Habitat: Woodlands and forests, generally over calcareous or mafic rocks. Distribution: VT west to MN, south to nw. GA and OK.

Origin/Endemic status: Native

Synonymy ⓘ: = Ar, C, F, G, GrPl, Il, K4, Mi, Mo3, NE, NY, Pa, RAB, S, Tat, Tn, Va, W, Lint & Epling (1945). Basionym: Hyssopus nepetoides L. 1753

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC
  • Eastern Mountains and Piedmont: FACU
  • Great Plains: FACU
  • Midwest: FACU
  • Northcentral & Northeast: FACU

Heliophily ⓘ: 6

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Erik Danielson source | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect, rhizomatous perennial of woodlands and forests, generally over calcareous or mafic rocks.

Stems: Stems distinctly 4-angled, sometimes branched above, mostly smooth.

Leaves: Leaves opposite, petiolate, oval or lance-oval, 1-5 in. (reduced upward), coarsely toothed, finely hairy beneath.

Inforescence:

Flowers: Flowers densely packed, along with small green bracts, in terminal spikes to 4 in. long; flowers pale yellow, ⅜ in. long, bilaterally symmetric, the corolla tubular and divided into 2 lips: a nearly erect, 2-lobed upper lip and a 3-lobed lower lip (middle lobe largest). The green calyx also is tubular with 5 lobes; there are 4 long-protruding stamens.

Fruits:

Comments:

Height: 2-5 ft.

plant sale text:

bloom table text:

description: Erect, rhizomatous perennial of woodlands and forests, generally over calcareous or mafic rocks.

stems: Stems distinctly 4-angled, sometimes branched above, mostly smooth.

leaves: Leaves opposite, petiolate, oval or lance-oval, 1-5 in. (reduced upward), coarsely toothed, finely hairy beneath.

inflorescence:

flowers: Flowers densely packed, along with small green bracts, in terminal spikes to 4 in. long; flowers pale yellow, ⅜ in. long, bilaterally symmetric, the corolla tubular and divided into 2 lips: a nearly erect, 2-lobed upper lip and a 3-lobed lower lip (middle lobe largest). The green calyx also is tubular with 5 lobes; there are 4 long-protruding stamens.

fruits:

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