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Placing the ash around many vegetation is valuable, garlic and geraniums are especially thinking about it. Fruit will advantage because, very often calcium is created also during and all fruit needs a certain quantity of calcium if the fruit is to be lovely.

I believe - remembering from books - that potassium is highest in green wood. So maybe summer prunings would be good, and available at tomato time too. Also a smaller, more manageable amount than gazillions of ash from chipped branches and winter pruning.
What would you store it in if not plastic to keep it dry and absorbing atmospheric moisture? Any experience/expertise in this area welcome as I'm keen to avoid commecially produced high potassium feed - I'm not sure it doesn't contain animal products. Info on this also appreciated.

Do you think glass jars will work?

Not a problem as long as the jar is dry. Just be sure that the ash has cooled otherwise the jar could break.

I think you'll find that garden prunings contain the least potash. Good solid hard wood is best. There's more information in my article on wood ash over at, and according to information I found from Oregon University Extension Service ( tree like oak will burn to produce more potash than, say, Douglas fir.

Hi, the Potassium is used in the adenosine di phosphate to adenosine tri phosphate cycle. ADP converts to ATP this is done during photosynthesis by using energy to if you like forcing a phosphate group onto the ADP molecule. When the phosphate bond is broken in ATP this releases energy .So this can be said to be an energy store for the plants that fills the gap in the energy cycle between breakdown and build up processes.

Ignore this it is not wrong just does not apply to potash just me posting with a hangover ,Sorry.

What about ash from a woidburning stove

Yes, as long as you've been burning purely wood, and nothing else, then this is fine.

We have a lake, man made which doesn't have water running through it and we've just pumped it all out, it was going green! and refilled it after three days but it's looking green again. I "fixed" it a long time ago as I heard wood ash chucked on to it will fix it, well it did work in about three days but now I have no more wood ash but I do have a bag of sulphate of potash, do you think that would do the job? regards Marie, Ashburton, NZ

Can someone help with a green looking lake?

Barley grass is said to help with algae on a pond.

Could you use this home made potash to make a lard or tallow type soap? And how would you regulate it caustisity?

Does burnt out charcoal produce potassium?

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