Last year after I moved into my house I dug out years and years worth of overgrown rose bushes and weeds beyond belief. I planted, I mulched and I watered all summer. This spring I had several tulips come up in my beds, all near the sidewalk that leads to my front door and a few out in the grass just kind of growing out there for no rhyme or reason. They bloomed yesterday and they are the palest of yellows, thin, wispy and dainty. I did not plant them. I was always under the impression that tulips would bloom well once then off and on for a couple of years and finally just disappear. Is it possible for tulips to lay latent for more than eight years and then suddenly pop up and become beautiful blooming pretties?