Pellet stove ash...Is it good for gardens?

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Val

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Mar 17, 2012
121
NY
I was trying to do something useful with my pellet stove ash. After the ash cooled outside in a covered metal can, I would put it in a composting mulcher. It was a mulcher that flips around. I also would put grass clippings in the mulcher during summer. (Not much food waste because I try not to throw food out)
So the mix turns to "soil" within the year and I put some in my very small garden (basically tomatoes, peppers, cucumbers). Now I ask myself if I am doing more harm than good? I live in a city...I am a terrible gardener as it is...but I wonder if pellet ash is good for some plants, bad for others or good/bad in general?
 
What if you don't have an acid problem? is there any harm spreading it on my lawn? Thanks
 
You can get your soil tested, wood ash is a liming agent and in the northeast a lot of soil is slightly acidic.

Here, the ash goes into my compost bins, working on filling bin number 5 for this year. The compost gets well mixed into the soil in the raised vegetable beds and into the flower gardens. We make and use a lot of compost, still building up the soil.
 
If you till it into your flower gardens, you'll see a huge difference in the size and color of the flowers. Like swwilliamson posted, you will see much more vibrant colors. It also works great for tomatoes as well.
 
Since most pellets are made from hardwood (mostly), it should be fine. Softwood ashes are not recommended for soil amendment, though I don't know exactly why. Wood ashes (compared to horticultural lime) also contain goodies like magnesium, phosphorous and no doubt other good stuff that I don't even know about. I make a lot of compost, but I don't usually put ashes in it. It's been my experience that they tend to retard the decomposition. I do put my ashes in a pile behind my compost piles and use it as needed in the garden. It's also good for filling gopher holes in the lawn, etc.
 
My lawn likes it if it is spread out evenly. I toss it into the air with a shovel so it doesn't land in clumps.

Tried a drop spreader but the ash was like sandpaper to the mechanism. And the spreader teeth were worn pretty bad after a few uses too.
 
Having used a pellet stoves for 5 years now, I've found that using the ash from stove has worked wonders on my gardens.

I've done both direct dropping under the crab apple tree and around the Rose of Sharon bushes, as well as, mixing with garden mulching. Both work well. I will say though that the direct drop method should be done with less than a gallon of ash every month. Also, if possible rake it into the soil, but that is kind of hard here in New England during the frozen winter months. During those periods I've found putting it on top of the snow/ice helps slow the release down into the soil during melting.

I don't use the ash for my pine and fir trees.
 
When I was a kid, Mom and Dad would dump ashes from our wood stove under an apple tree we were fond of. To our disappointment, the fruit began losing its delicious tartness. It took a number of years for the flavor to return.
 
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Using burnt pellets to help plant life. No wonder it's green energy.
 
I have been spreading my ash on my lawn for years, it loves it! Greens it up fast and deep!
 
I have a neighbor that uses the ashes to fill in the potholes in his driveway. Then of course his kids walk through it and drag it thru every house they enter. Ask me how I know. :mad:
 
Ive also heard Voles dont like much ash in the soil, for some reason
I didn't know this. I had/have voles (somewhat controlled) and will try this. Here's some food for thought on Voles...

"Females produce 4 - 6 young after a gestation period of 18 - 20 days. Young voles are born in a nest of dry grass, usually hidden in a thick grassy tussock. Males can breed at 40 days of age, females at 28 days"

Do the math if you like they are prolific buggers.
 
When I was a kid, Mom and Dad would dump ashes from our wood stove under an apple tree we were fond of. To our disappointment, the fruit began losing its delicious tartness. It took a number of years for the flavor to return.


Hi, when I was a kid we did the ash dumping into the driveway, my father always said 'No place else, because this is coal ash'. Also, since my current tree is a crab apple, it's just a ordimental tree not for eating.
 
Hi, when I was a kid we did the ash dumping into the driveway, my father always said 'No place else, because this is coal ash'. Also, since my current tree is a crab apple, it's just a ordimental tree not for eating.

I imagine it shouldn't be a problem for the crab. I ran across an interesting website that describes the general elemental content of wood ash -- according to the U of Maine it's in the ballpark of 20% calcium, less than 2% phosphorous and 4% potassium -- pretty mild stuff compared to the average 10-10-10 (nitrogen-phosphorous-potassium) fertilizer. Here's the link: http://umaine.edu/publications/2279e/

The calcium can drive up ph, which might be of concern if the soil is already alkaline like mine is here in eastern Wisconsin. We have the Niagara Escarpment nearby, which is a vast storehouse of calcium already.

The Maine site also reports a fairly large copper and chromium content in the ash sample they analyzed, which is something else to keep in mind. Of course, I'm sure there's a lot of variation in ash from different wood sources. But like I said, it's an interesting site.
 
If you like your hydrangeas blue keep it away from them. My soil is neutral but most my plants like it on the acidic side so the only thing i add is coffee grounds. It wont hurt anything unless you have plants that like acidic soil. Some plants loose the ability to absorb nutriants if the soil is not acidic enough but none of those plants i can think of is in a vegtable garden. Your lawn wont care less with a little bit of ash on it.
 
Mine either goes into the compost or on my driveway for traction and to help the ice melt. Being black, it does an ok job of absorbing the suns rays.

If you add it to your composter, be sure the ash is completely cooled. My composter is just four pallets wired together. A couple of years ago I cleaned my stove and was sure it was completely cool. You can guess what happened next. My compost bin cant be seen from my house, so I was quite surprised a week or two later when I took something out and one side of one of the pallets was charred.
 
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