SHroomtroll

I have been using wood ash on my plants and cacti and it does wonders for them...

Here is some information on using wood ash on your plants: Composition will vary depending on what was burned.

Wood ash contains 10-25% calcium, 1-4% magnesium, 5-15% potassium and 1-3% phosphorus.

A fertilizer for the yard and garden. Wood ash is a good (0-2-10) fertilizer for the garden. The types of wood you burn does play a role in the amount of nutrients it contains. Hardwoods generally produce 3 times more ash that contains 5 times more nutrients than softwoods. Ash will temporarily increase the pH (make more alkaline) of garden soil, so you should only use it sparingly and not at all if your soil pH is already over 7.0. Two pounds of wood ash equals about 1 pound of ground limestone. When used as a fertilizer, wood ash should be applied at least two months before high nitrogen fertilizers because it promotes the loss of nitrogen from ammonia-based fertilizers. Don't use wood ash on acidic-loving plants like rhododendron, blueberries or azaleas.

I hope this helps, best of luck. :d

Much Peace and Kindness