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If your house is equipped with a wood-burning fireplace or you have a fire pit in your backyard, put the left over ashes to work in the garden. As long as you follow a few simple precautions, wood ashes can be used to benefit the garden in three ways: as a fertilizer, as a soil amendment, or as an insect repellent.
If you're unsure of your soil's pH, don't add wood ashes to your soil until you have it tested. Raising the soil's pH above optimum levels can adversely affect the health of your plants. When pH levels rise above 7.0 (neutral), important nutrients like phosphorus, iron, boron, and potassium start to chemically bond to the soil and become less available to plants.
Handling & Storage
Ashes from charcoal grills should never be used in the garden due to the chemical residues left by processed charcoal. The same is true of ashes obtained from cardboard, and ashes from wood that has been pressure-treated, painted, or stained. All contain harmful chemicals that could potentially contaminate soil and inhibit plant growth.
By Ellen Brown
Use ashes from your fireplace to sprinkle in your garden. It wards off slugs, as well as many other harmful insects. The ashes act as shards of glass as they crawl on the dirt.
During these winter months when fireplaces are in high use, you will generate quite a bit of ash. We clean out our fireplace into a paper grocery bag. The bag is then rolled shut tight down to the level of the ash and placed into a storage tub with a secure lid. One tub will hold quite a few bags.
These bags will be periodically be added to our compost heaps throughout the Spring and Summer. I even take one or two out the pile now and simply place the bag in the pile. Wet weather will break down the bag and keep the ash from blowing around.
By Stormy S.
If you have a fireplace or wood stove, take your ashes and put them around your plants. Your plants will grow better, and less or no weeds will grow there.
By enola from WI
Have a chimney? Here's a different use for your wood ash. It could be used for any household cleaning needs that requires scouring. It can also be used in the garden as fertilizer and if you have a pen for livestock, the ash can be sprinkled on the floor and animal droppings before sweeping. Saves you a few pennies that would have been used to buy cleaning detergents. (Did you know that wood ash, specifically that of the palm tree, is one of the two ingredients for making native soap (the other being palm kernel oil) in some parts of Africa)
By NY from Upper Darby, PA
Don't know what to do with those ashes? This is a tip for those who have ash from a wood burner or fireplace. Place it in your garden or flower beds over winter, not all in the same place, just here and there. In spring as you till/working the ash in the ground, you'll find how it makes your ground so much more lose and easy to work with.
I also think there is some added fertilizer that naturally comes from the ash. It really does good things to your ground. Can't wait for spring, have had enough of winter. Here in WI.
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Here are questions related to Uses for Fireplace Ashes.
I need some ideas on what I can do with all the wood ash from our wood furnace and fire place. In the winter we use it like salt on the snow and ice. But what can I use it for now? Is it good in the garden?
By Diva53d from Foymount, Ontario
You can actually buy Real Wood Ashes on Amazon. Just found it!
1 Pound of Oak Wood Ash (Ashes Natural Fertilizer, Change PH Levels in Soil, Ward Off Slugs, Protect Plants Over Winter, Control Pond Algae, Boost Your Organic Tomato Plants, Compost, Make Soap, Shine Silver)
Can I use wood ashes on my pineapple and apple tree?
Hardiness Zone: 8b
Robert from Montverde, Florida
By old cookie (Guest Post)12/06/2007
No one said pineapples grew on trees. If you look it says
pineapple and apple tree, not pineapple tree.
What can I do with wood ash? Besides tossing in the woods. What garden plants or veggies like it?
We put our wood stove ashes in the garden. My husband roto-tils it all in and it is good for all vegetables.
Thrifty Fun has been around so long that many of our pages have been reset several times. Archives are older versions of the page and the feedback that was provided then.
Q: I have heard that you can put fireplace ashes on certain plants. Can someone tell me what plants this works for and what plants I shouldn't put them on? Are there any other uses for ashes?
Fireplace ash (wood ash) can be safely added to most garden soils, with a few exceptions. Depending on the type of tree burned, wood ash varies in alkalinity and will act as a liming agent in the soil, raising the pH. This makes it a useful additive if you have acidic soil or compost heaps that you want neutralized. Root crops, bulbs, annuals and most perennials will find it beneficial. Tomatoes seem to love it. Because of its alkaline nature, you should avoid giving it to acidic loving plants like rhododendrons, azaleas, cranberries or blueberries. It may also promote potato scab when applied to potatoes. Store fireplace ash safely in a metal garbage container and apply it to plants in the spring. Wood ash is easily absorbed into the soil so you only need 1/4 inch to 1/2 inch to dress flowerbeds. Wood ash from treated wood contains the residue from harmful chemicals and should not be used in the garden.
Other ways to use wood ash are as a slug repellent around plants, a glass cleaner (use on fireplace glass-rub with newspaper) or as a melting agent (provides traction on snow and ice). It's also used as a boiling agent to break down cellulose plant material when making homemade paper.
By Ellen Brown
By Stan - Michigan
By D - Lancaster, PA