How much would sand help by adding it to clay soil with compost already added?
I would leave out the sand for now and continue to add compost/loam/peat. If you add sand to clay soil, you will end up with something that has the consistency of cement/concrete. So you had better have, at the very least, three times as much compost as you do your clay/sand mixture. For now, if I could, I would put down a 6 inch layer of compost and till it in – and I would continue to add compost throughout the year. If I had problems with drainage a year from now, I would add some sand. But for now be careful with how much sand you add in comparison to the other ingredients – the soil could become MORE compacted. If the soil should dry out, it could get as hard as stone.
