Davey Tree Flipbooks

ODOT Guide for RIVM

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33 SEASONAL IDENTIFICATION MUSK THISTLE (Carduus nutans) SPRING SUMMER LATE SUMMER - FALL SPRING - SUMMER SUMMER FALL - WINTER Seedlings and rosettes can be found in spring. The winged leaves have a broad center midrib, light green edges, and multiple spines per lobe. Flower buds are green with a lavender center. They are globe shaped and symmetrical with large lance-shaped bracts. Attractive, pink flower petals emerge and look similar to a shaving brush. Note that the flower or seed heads occasionally nod or bend downward. Cottony seeds develop as the primary means of reproduction and are spread by wind. Lobed and coarsely-toothed spiny leaves are hairless. Stems are covered in spiny, leaf-like wings. Spines are evenly dispersed along the leaves and stems and are very sharp to the touch. Plants may be single stemmed or develop branches. Flowers and seeds are often found on the same plant at the same time. In early winter prior to snow, the plant retains much of its form, including seeds and seed heads.

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