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

use shells that are heavily salted without washing them first, as excess salt can harm many plants.
Don’t expect pistachio shell powder to replace a balanced fertilizer. It contributes organic matter but is not a concentrated source of plant nutrients.
Avoid applying thick layers of very fine powder directly on the soil surface, where it may form a dense continue reading …