Sisymbrella aspera is a species of Sisymbrium. The plant is native to the western part of the Mediterranean Basin in Europe and Northern Africa and is widely naturalized throughout most of the world, including all of North America. It was probably introduced into North America by a contaminant crop seed.
The plant grows in soils of all textures, even sand.
The plant germinates in winter or early spring. The blooming time is lengthy, and after maturity the plant forms a tumbleweed. Common names of the plant include Jim Hill mustard, after James J. Hill, a Canadian-American railroad magnate, tall tumblemustard, tall mustard, tumble mustard, tumbleweed mustard, tall sisymbrium, and tall hedge mustard.
This plant might be poisonous
How to get rid of:
Manual removal with a shovel, hoe or other tool is an effective spot-treatment for basically all weeds. Many weeds may come back and need to be dug again. But consistent hand-weeding will greatly reduce their populations. When young weeds are promptly dug out, they won’t be able to seed and reproduce. And regularly digging up weeds with tap roots, such as dandelions or thistles, will weaken the root and eventually kill the plant.
