Can somebody help me to understand the chemistry of my garden please?
We have a log fire and for 6 years have been putting all the resulting ash on the garden and around the roses - with the memory of my Dad coming home from work with a bag of woodash given to him by a colleague and delightedly packing it round his roses. Now I read on the RHS site that it's not good practice, as it turns the earth alkaline and, if used in veggie beds, could cause scab on potatoes. We live on the edge of the Picos de Europa mountains which are mainly limestone. We dig up limestone rocks and slatey shards from our garden - should we be putting ash into our earth which gets regular barraowloads of sheep manure from the compound next door? If there is a chemistry Wizard out there, please tell me like I'm a 2-year-old, because I really don't understand all the alchemy and it seems I need to!
- 21 Oct, 2012