Posted: 07/06/2014 at 22:39
Supernoodle, it is a very invasive plant. It spreads underground and shoots pop up in places you don't want in the spring.
I have a clump in my front garden in a "problem" corner - thin strip of stony soil that doesn't get as much sun as the rest of the front. This year shoots were coming up in the paving cracks next to it but I just pulled them up. If you plant it in the right place it's not too bad, so easy to grow and I love the mass of yellow flowers.
Just don't give it rich soil in full sun next to your lawn or something and it will reward you year after year. It can be dug up in spring to keep it under control.