clover

Here is something I actually invited to my yard. No, not the creeping Charlie! (Though it, at least, was here in the yard when we bought the house, rather than showing up on my watch as a bunch of these other Incorrect plants have done.)

My parents' backyard had a lot of clover, when I was growing up, and I know it's good for the soil. I sowed clover seed in my back yard, and here it is, several years later. From time to time I think I see a four-leafed one, but so far I never really have.