There are more than 300,000 species of plants in the world. In Colorado, we have more than 3,000 species. Plants are very ...

Experts explain how to identify and get rid of 25 common lawn weeds before they take over, so you can enjoy a healthy yard ...

Invasive thistles in Central Washington include: • Canada/creeping thistle (Cirsium arvense) commonly found in lawns, gardens and disturbed areas. It has a waxy green leaf and a formidable rhizo ...

Canada thistle (Cirsium arvense) is a creeping perennial broadleaf that is native to the Mediterranean area. It spreads rapidly through underground stems called rhizomes and by producing seeds. It ...

Easily recognizable due to its vase-shaped purple flowers with dandelion-like seeds, Canada thistle (Cirsium arvense) is a particularly aggressive invasive plant. Despite its name, Canada thistle is ...

In Illinois, there are several species of invasive thistles, including Canada thistle, Cirsium arvense; bull thistle, Cirsium vulgare; and musk thistle, Carduus nutans. These are all considered ...

This may not be a concern if it’s a desirable plant, but can become extremely problematic when that seed comes from Canada Thistle (Cirsium arvense) (Fig. 1). Canada thistle is found on the list of ...

Canada thistle (Cirsium arvense) was one such plant when we moved to Northeast Ohio five years ago. The blue-gray foliage of the rosette-shaped seedlings looked intriguing during spring ...

WINNIPEG, MANITOBA, CANADA — Vietnam’s Ministry of Agriculture and Rural Development has removed creeping thistle (Cirsium arvense) from its quarantine pest list, providing an expected boost to Canada ...