An eradication program is recommended as soon as the annual (sometimes biennial) yellow thistle plant is recognized growing on a person’s property. Why is yellow starthistle a problem?

Not every plant that is prickly is a thistle. So how do you identify a prickly plant that you come across to determine if it is native or nonnative thistle or not even a thistle? Assuming that you ...

These non-native, invasive plants have a large impact on our wildlands, pastures and agricultural fields. How can you identify them? Yellow star thistle has gray-green foliage, a deep taproot ...

Despite its name, Canada thistle is not a plant native to Canada ... make sure you know how to identify aggressive Canada ...

Then in midsummer, the plants bolted upward and looked a little more alarming. I was able to identify them as Canada thistle, but because both “Canada” and “thistle” sound pleasant ...

Improving your soil will weaken thistle and help desired plants grow better. We recommend investing in a $9 soil test kit from your local extension office. Thistle has an extensive root system.

Not every plant that is prickly is a thistle. So how do you identify a prickly plant that you come across to determine if it is native or non-native thistle or not even a thistle? Assuming that ...