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You Can Reuse Potting Soil

By LarryR
June 5, 2013

Save old potting mix and save some money in the bargain when you repot plants. Make sure the plants in the pots had no diseases. Use the old mix to fill the bottoms of large containers. Leave room for at least four to six inches of new mix on top.

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Name: Greg Colucci
Seattle WA (Zone 8b)
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gg5
Jun 4, 2013 10:31 PM CST
Hi Larry, thanks for the tip!
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[Last edited by gg5 - Jun 4, 2013 10:33 PM (+)]
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Name: Renée
Northern KY
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KyWoods
Jun 5, 2013 10:14 AM CST
It's good for filling potholes in the yard or garden, too! Big Grin
Name: Ginger
Fountain, Florida (Zone 8b)
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gingin
Jun 5, 2013 1:27 PM CST
I reuse mine all the time unless I'm potting up something special and then I use new. And yes, the ruts in my driveway get lots of used dirt.
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Name: Larry Rettig
South Amana, IA (Zone 5a)
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LarryR
Jun 5, 2013 9:51 PM CST
Thanks, all, for your comments. I mix my own potting soil and have, on occasion, blended in about 1/4 used soil. Seems to work just fine.
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Name: Rick Corey
Everett WA 98204 (Zone 8a)
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RickCorey
Jul 18, 2013 3:55 PM CST
If you layer two batches of potting mix in one container, and they are rather different in grain size or peat content, scratch an inch or two of the new mix into the top 2 inches of the old mix, so the transition between the two mixes is gradual.

That will help water migrate easily, and divide itself evenly between the top and bottom of the pot. Abrupt changes between two very different mixes can interfere with capillary movement.
Name: Larry Rettig
South Amana, IA (Zone 5a)
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LarryR
Jul 30, 2013 12:09 AM CST
Thanks for the tip, Rick!
Gardener was the label imprinted on me when the souls were handed out and so be it. --Margaret Roach (Thank you, Sharon!) Notes from the Garden: Articles of interest on all aspects of gardening
Cottage-in-the-Meadow Gardens: Come on in and take the tour! Check out the photos!
Name: Margaret Burgess
United States
JackJack60
Nov 17, 2013 10:39 AM CST
Since I am somewhat new to houseplants and very frugal, I have reused my old soil from other plants and put in the microwave for a few minutes just in case there was a unknown problem or bugs. It seems to work for me just fine. In addition, I got this tip from Miracle Gro when I purchased some of their soil which had some flying critters.

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