Reusing Pistachio Shells: How to Turn Them Into Powder and Use It in Your Garden

you’re using unsalted pistachio shells, you can simply rinse off any dirt or debris and allow them to dry.

Step 2: Grind the Shells Into Powder

Once the shells are completely dry, grind them into a coarse or fine powder.

You can use:

A heavy-duty blender
A food processor
A coffee grinder reserved for non-food materials
A garden shredder (for larger batches)

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