How should I start improving clay soil in my backyard?

[GraceT]

I’ve just moved into a house with a very neglected backyard, and I’m trying to figure out how to start improving the soil. It’s mostly hard-packed clay that turns into a swampy mess when it rains, but I’m hesitant to just till in a bunch of bagged compost without a real plan.

[DennisLT]

I moved into a clay yard that turned into a swamp every spring. I started by piling on organic matter—leaf mold, compost, and a thick mulch on top—and I kept tilling to a minimum. It took a full season, but the soil loosened a bit and drainage looked a touch better after rains.

[OliverH]

I did more traditional bagged compost and some generic amendments, and it felt like throwing money at a problem that didn't want to be fixed. The yard stayed heavy and wet after rain. I stepped back and started by fixing the drainage first rather than piling in amendments.

[Emily31]

Maybe it's not the compost at all. The pool of water in low spots makes the clay act like a sponge. Do you think drainage is the real problem? I poked holes after a rain and the water sat in some spots for hours.

[Paul86]

I did one small test bed to see what happened when I added a little organic matter and ran drip irrigation for a week. The bed stayed workable, and the earthworms finally showed up a bit. It's not a magic fix, but I felt encouraged enough to try more slowly rather than blasting the whole yard.