Managing invasive and noxious plants is a challenge each growing season. Every year the Minnesota Department of Agriculture ...

European marsh thistle, a terrestrial and wetland herbaceous biennial in the Asteraceae family, is an invasive plant that prefers moist soils. European marsh thistle frequently invades fens, wetlands, ...

Our Mystery Plant ("Spiny sow-thistle”, Sonchus asper ... That’s an old word for “marsh,” as we would say, and it must be related to the French word “marais”, which of course means ...

typically grows 3-5 feet tall stalk-less leaves around 6 inches long, wavy, lobed leaves with yellow spines at each lobe stem is spineless, unlike the leaves and unlike bull thistle and European marsh ...