These plants are widely cultivated for ornamental use in North America, but it does not generally persist in the wild. There are colls. are from HOPK, PIKE and ROWA, but probably just near old home sites and not truly naturalized. These plants are considered a variable hybrid taxon (with 2n = 14 and 28), derived from P. integrifolia (Hook.) Schinz & Thellung and P. axillaris (Lam.) B.S.P.