Bull thistle is easy to mix up with similar-looking, native thistle species. But unlike native thistles, bull thistle should ...

Keeping a clean lawn free of weeds often involves regular mowing, but a new study suggests this common practice might be backfiring in the case of a particular weed. Researchers from the University of ...

The purple flower heads may look pretty, but don't let that fool you. Milk thistle (Silybum marianum) can be a pain if it's growing in your yard. It's non-native and can be an invasive plant, as Keri ...