I could never get dill to grow outside, no problems with my Aero Garden but out side it just wouldn't do much. A few years ago I got a small clump that went to head, then died. This year I have "volunteer" dill all over the back yard. I guess somethings are just happy when you abuse, ignore and forget about them.
Speaking of mowing things. I saw some landscapers do this with daisy's. Instead of clipping them back each year with clippers they just used a high weed mower and mowed them. They always came back really strong with lots of blooms. I guess nothing says I love you, please grow like a lawnmower!
Robert