2023年1月3日 · Bull thistle (Cirsium vulgare) is a biennial that true to its name, has notable spines. This plant is much different than Canada thistle. The foliage of bull thistle has stiff hairs on top and a woolly appearance on the bottom; while Canada thistle is smooth on top and either smooth or hairy on the underside.

Bull Thistle (Cirsium vulgare) is a biennial that is commonly found throughout the United States and southern Canada. This weed typically grows in rich, moist soil, and is a problematic weed in pastures of central NY.

Bull thistle, also called spear thistle, Fuller’s thistle, and lance-leafed thistle, is a biennial in the sunflower (Asteraceae) family. A native of Eurasia, it is widely established in North America after continuously being introduced as a seed contaminant.

Bull thistle is a biennial forb that was introduced to North America as a seed contaminant and is now widespread. Gumdrop-shaped flowers are pinkish to dark purple in color and 1 ½ to 2 inches in diameter.

Bull thistle, Cirsium vulgare (Savi) Ten., is a biennial forb that was introduced to North America as a seed contaminant. Flowers are in a raceme arrangement. The gumdrop-shaped disk flowers are pinkish to dark purple in color and 1 1⁄2 to 2 inches in diameter. The pappus has feather-like bristles; the receptacle is densely bristly.

How to identify bull thistle. Bull thistle (Cirsium vulgare) is a biennial herbaceous plant (a type of bull thistle) grows between three to seven feet tall. It forms a four to eighteen inch wide rosette in its first year and blooms in its second year. Stem. Plants bolt in late May. One to several vertical branched stems form in the second year ...

Key ID traits: Individual lobes are narrow and tipped with prominent, sharp spine. Leaves hairy on both sides. Similar species: Musk and tall thistle are the primary biennial thistles in Iowa. While both produce basal rosettes, leaf characteristics are sufficiently different to simplify ID.

2022年2月24日 · Prevalent in the United States and Canada, bull thistle ( Cirsium vulgare ) is invasive and difficult to manage. Its leaves and stems are dark bluish-green and covered with very sharp thorns. Bull thistles are biennial and only bloom in the second year. Pull thistles before they bloom so their seeds don't spread in the wind.

Bull Thistle (Cirsium vulgare) is wild, edible and nutritious food. Identify bull thistle via its pictures, habitat, height, flowers and leaves.

2017年9月21日 · Thistles can be identified by the shape of their leaves, their color, their spines and the color of their flowers. There are five common thistles: bull thistle, musk thistle, Scotch thistle, distaff thistle and Canada thistle. Bull thistle, also known as …