A local horse boarding ranch advertised free compost, and we were looking for an inexpensive way to amend our vegetable gardens. The compost looks like the muckings out of horse stalls and consists primarily of horse manure, straw and some sawdust. My concern is with the designation as "compost." It has half formed road apples and much of the straw is still intact (also still has a strong horse urine odor). I don't doubt that this could be a productive amendment at some point, but my question is, should I till this stuff into my garden beds now (with planting about 30 days away), or should I mound it up somewhere covered with a tarp until next year?