Severe frost but not shade could limit the future growing season of Erythronium americanum

Changes in climate are leading to modifications the timing of seasonal events such as migrations and flowering. Erythronium americanum (trout lily) can break bud early response warming, but changes its growing season may be limited by shade from canopy trees frost. I experimentally assessed impact frost on senescence E. descriptively monitored vernal air soil temperatures a garden setting. Early did not affect senescence. Experimental exposure resulted increased leaf damage, earlier senescence, greater corm death than control plants. Despite ten days which temperature dropped below freezing, there was no evidence damage field. These results suggest that will hasten end future for americanum, late could bring about if is sufficiently hard.