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Eupatorium semiserratum A.P. de Candolle. Phen: Late Jul-Oct. Hab: Swamp forests, seepage bogs, savannas, clay-based Carolina bays, other wetlands. Dist: Se. VA south to ne. FL, Panhandle FL, west to TX and AR; disjunct in sc. TN.

ID notes: This species often has 3 leaves per node; most similar species rarely or never have whorled leaves.

Origin/Endemic status: Endemic

Synonymy ⓘ: = Ar, C, Fl7, FNA21, G, GW2, K1, K3, K4, RAB, S, SE1, Tn, Va, WH3; = Eupatorium cuneifolium Willd. var. semiserratum (DC.) Fernald & Griscom – F; < Eupatorium glaucescens Elliott – Tx

Links to other floras: = Eupatorium semiserratum - FNA21

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW
  • Eastern Mountains and Piedmont: FACW
  • Great Plains: FAC
  • Midwest: FACW

Heliophily ⓘ: 7

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Collectors SOS | Original Image ⭷
image of plant© Collectors SOS | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Collectors SOS | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Erect perennial of swamp forests, seepage bogs, savannas, clay-based Carolina bays and other wetlands.

Stems: Stems usually solitary and branched only in the inflorescence, densely hairy and sometimes glandular.

Leaves: Leaves in whorls of 3 (rarely 4 or opposite), elliptic to oblong-lance-shaped, with 3 primary veins, toothed, minutely hairy.

Inforescence:

Flowers: Composite flowers (heads) arranged in omewhat round-topped clusters at tips of inflorescence branches; heads white, about 1/4 in. long and consisting of several tiny, tubular disk florets surrounded by several series of tiny bracts.

Fruits:

Comments:

Height: 1 1/2-5 ft.

plant sale text:

bloom table text:

description: Erect perennial of swamp forests, seepage bogs, savannas, clay-based Carolina bays and other wetlands.

stems: Stems usually solitary and branched only in the inflorescence, densely hairy and sometimes glandular.

leaves: Leaves in whorls of 3 (rarely 4 or opposite), elliptic to oblong-lance-shaped, with 3 primary veins, toothed, minutely hairy.

inflorescence:

flowers: Composite flowers (heads) arranged in omewhat round-topped clusters at tips of inflorescence branches; heads white, about 1/4 in. long and consisting of several tiny, tubular disk florets surrounded by several series of tiny bracts.

fruits:

comments:

cultural notes:

germination code:

native range: