Knowledgebase

where to spread wood ash in my yard/garden? #947768

Asked October 27, 2026, 12:34 PM EDT

Hello! I have a wood-burning fireplace and also a backyard sauna with a woodstove, so frequently need to dispose of wood ash in the winter. I know it has some beneficial properties, and can make soil more alkaline. What I don't know is where I should put to help my yard/landscape, rather than harm it? I live in South Minneapolis, haven't had my soil tested, but it seems relatively healthy (probably pretty neutral). Here are some of the types of plantings I have, where I could focus on spreading the ash over the winter: lilac bushes; raspberry garden; river birch clump trees; eastern redbud tree; serviceberry trees; ornamental grasses like Karl Foerster, little bluestem, prairie dropseed; purple cone flowers; hydrangea; hostas; and evergreens like arborvitae, juniper, spruce. I also just have a fair amount of turf lawn. I need to get rid of the wood ash anyways, so was hoping I could spread it in areas that my plants/trees would like. Any tips would be appreciated! Thank you for you expertise and advice ;) -Ben

Hennepin County Minnesota

Expert Response

Thank you for reaching out.

It is strongly suggested to do a pH soil test before you start spreading ash just in case you are acidic and not alkaline.

Wood ash raises the soil pH but also supplies, calcium and potassium. It is best when spread late winter to early spring

Bushes that like it or benefit from are roses, lilac, peonies, clematis, and spring, flowering bulbs. Do not apply it to blueberries, huckleberries, rhododendrons, azaleas, or areas where you will plant potatoes.
It is suggested to use it sparingly which is about 1/2 to 1 pound per shrub and keep it dry before you apply it.

I hope this helps!

Deb Kroon Replied October 27, 2026, 6:37 PM EDT

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