I had some yellowing on my new growth and bud sites and though for a while that It was a mag or sulfur deficiency. However when that turned out not to be the case I saw some potential in low pottasium and seeing as how ash contains lots of that I tried foliar feeding it. I chose this route since i heard pottasium moves slowly through soil. I added a tiny bit of iron oxide (rust) after hearing that I could potentially help with growth. Instead of tap water I used pond water. Anyways after applying it heavily in the morning I checked back in the evening and it seemed like the leaves were getting worse and potentially bruning. I used a mix of 30% pond water and the rest good tap water (from a well) and thouroughly rinsed the plants. I check back this morning and they have almost completly recovered from the original problem. Now my question is has anyone tried foliar feeding ash or any other homemade ferts?