Thank you @fadiji09, you can also eat the thistle, the root makes a good tonic for detoxing the liver. I didn't put that bit of data in, I like the legends around the Scottish thistle .
You have to dig down deep to get all the root, I put lots of hours into digging our tansy and thistle plants growing up and working on our farm.
The post is more loaded and some exempted info might not be seen.
The thistle will grow just about anywhere from rich soils to poor, it is very hardy and the seeds have a downy umbrella that is used to ride the wind.