My father-in-law passed away a month ago, and since then, my wife and I have been helping my mother-in-law get everything in order. One thing that I'm trying to help her with is the back yard. It's really a mess, but we're making progress. One thing that I'm not sure how to handle is the standing water. They have very poor soil. It's mostly clay, and there's almost no runoff. After a decent rain, nothing gets absorbed and there's always several spots in the back yard with standing water. They also have a pond/bird bath, so they always end up with a terrible mosquito problem. My first thought was to put in some plants that would help absorb the water. I went to Lowe's, but the guy in the nursery department was clueless. I then went to a local nursery and spent 30 minutes trying to get someone to help me without any luck. Does anyone here have any advice on what we could plant to help alleviate the problem, or anything else we could do to avoid the standing water?