Salted pistachio shells can also be placed around the base of the plants to deter slugs and snails. Many craft uses of shells include Christmas tree decorations, jewelry, mosaics, and rattles. Not only can you use pistachio shells as mulch, but you can also use them as compost. Gather in bulk and let them decompose, you can also add other compost piles.
This can take a long time, so keep in mind that, since shells are a natural material, they will eventually decay in two or three years, so when you transplant the plants they will need to be replaced. Also note that if pistachio shells have salt, that can be harmful to the soil, as the salt kills beneficial microorganisms. Pistachio shells are hard and degrade slowly, but you can speed up the process considerably by shredding them before throwing them away. Although classic drainage materials are small rocks and pebbles, the advantage of pistachio shells is that they eventually biodegrade, so you'll never have to extract them from the soil when you replant the plants in pots.
Ingenious craftsmen have discovered numerous ways to incorporate pistachio shells into their DIY projects. There are literally hundreds of ways in which a pistachio shell can be used in crafts if you have the imagination. A very simple craft you can make with pistachio shells is a relaxing rain bar, or check out some of these other ideas, such as pistachio flakes or a painted pistachio necklace. Most pistachio shells break naturally during the ripening process, making it easy to open them by hand to reach the inner nut.
The next time you eat pistachio shells, do the right thing not to throw away the shells, as you already know, they can be used for many things. Pistachio shells are used to provide great soil drainage, so they have no specific effect on the environment. To help them break down and get rid of salt, first soak the shells overnight and then rinse them thoroughly in the morning. You may want to continue using this shell for an open fire, as the oil content it contains allows it to explode when exposed to open fire at high altitude.
Pistachio shells break down slowly, so if you add them whole to your compost bin, they can take two years or more to break down. Unlike other nuts such as walnuts, cashews or walnuts, pistachios develop a natural split in their shells during the growth process, meaning that they don't need to be completely peeled to roast, salt and flavor them. But you can do much more with pistachio shells than simply compost them, and you can use them in a variety of ways in your garden, as we'll discover below.