Davey Tree Flipbooks

ODOT Guide for RIVM

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15 SEASONAL IDENTIFICATION CRESSLEAF GROUNDSEL (Packera glabella) FALL - SPRING LATE SPRING EARLY SUMMER SPRING EARLY SUMMER SUMMER - FALL Young cressleaf groundsel is found as a low-growing seedling or rosette from fall to spring. Leaves and stems typically have a purple tint or are completely purple. Cressleaf groundsel is highly visible across this farm field. The plant grows in open areas with wet soils, often in areas prone to seasonal flooding. After the plant flowers, the petals give way to cottony tufts composed of many small seeds. Seeds are the primary means of reproduction and can be dispersed long distances by wind. Stems are smooth, hollow, and have vertical ridges like celery. Branches and flower buds develop in spring. Leaves are deeply divided with a broad tip. The flowers are entirely yellow with yellow petals and yellow centers. They are produced in groups at the end of branches. Seeds develop at different times, often while flowers are still present. After going to seed or after a hard frost, cressleaf groundsel withers and collapses. It stays green during this process and rapidly decomposes, leaving seeds behind to germinate in fall.

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