posted 5 years ago
We have pineapple weed growing all over our dirt roads here, that might do the trick. It's a close relative of chamomile so that might work for you too, but I don't have any experience with it. Daikon radish are famous for breaking up compacted soil.
Personally what I would do is find somewhere else with extremely compacted soil in your area (dirt road?) and see what plants are growing on it, then collect seeds from them or buy seeds of the same variety. This will give you plants that are well suited to your climate.