For some reason I can never get dill to grow properly. I love the flavor, but it just won't grow. I've tried growing it in a container on my porch and I've tried planting seeds directly in my herb garden but it never grows large enough that I am comfortable harvesting it. I keep hearing people say how dill will take over the whole garden and only plant it in containers, but it just won't grow for me! What am I doing wrong?