Mulching/Improving soil. I have clay soil and would like to be adding some organic matter and grit every year. In the early years I added some bark (which I now know depletes nitrogen!) and a lot of spent mushroom compost. Now that the borders are very full of plants I wondered whether it is still ok to just add a thick mulch over the top of everything, or does that smother some of the plants? my friend's mum has 8 ponies and I am hoping to take delivery of a trailer load of you know what once the thaw comes! I don't want to suffocate my herbaceous perennials though!
- 24 Dec, 2010