tl;dr When I moved into my current house, I had to clean up the garden, which hadn't been touched for about 5 years, and was mostly rampant brambles and grass (I have 5 times more patio now than when I moved in, and I haven't laid any). Wherever I dug were weird bulbs. Where I made my vegetable patch, and where they were too thick I pulled them out. I left them in other places in case they were nice flowers. I have no idea what they are, and would like to know in case they are going to turn into anything interesting. I'm in Wales, about 1.5 miles from the sea. They were dormant as of August last year, and started coming through in January, and even frosts and snow haven't killed the little buggers. They are everywhere. Also, The two rhubarbs in front of the fence are mine, the one behind the fence is my neighbours. His is obviously much larger than mine. I can't understand why. He doesn't seem to have done anything to it over winter. Could it just be having an "off" year? My granddad said his used to have bad years. Do I need to split the crowns? Obviously they haven't been touched for at least 5 years, like the rest of the garden. I'm a very new gardener, and am mostly working things out by trial and error, but I like rhubarb, and it would be a shame if I killed it.