Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018.
Scientific name: Kalmia angustifolia L.
Common name(s): sheep laurel, American sheep-laurel, lambkill, lambkill kalmia, wicky
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– perennial shrub
– generally flowers May to July in ME
Short, erect, woody shrub up to 3′ tall. Persistent leaves in whorls of three, oblong, dark green above, light green below and waxy, 1″-2.5″ long 1/4″-7/8″ wide, turn brownish in fall. Flowers crimson 1/4″-1/2″ wide, set in a cluster 3/4 up the stem.
Hansen, R.W., S.B. Hansen and E.A. Osgood. 1991. Reproductive phenologies of selected flowering plants in eastern Maine forests. ME Agric. Exp. Station Tech. Bull. 143. 17 pp.
Heinrich, B. 1976. Flowering phenologies: Bog, woodland, and disturbed habitats. Ecology. 57(5):890-899.