Grew some spring onions for the first time this year, I have IBS so avoid the white bits and only have them once a week or so, I was just pulling the leaves off them. I was surprised though that they're still going now and I still seem to have nearly as many as when I started. Googled it and hadn't realised that if you leave the white bit in the ground they can grow back 4 times!
Maybe the rest of the world knew this all along and it's just me but anyone else have any garden surprises like this?