What Can You Do With Walnut Shells

Walnut shells can be repurposed in a surprising number of practical, creative, and eco-friendly ways around your home and garden.
 
If you’ve been cracking walnuts for a recipe and tossing the shells in the trash, you’re missing out on a free resource that has dozens of uses.
 
From gentle abrasives to garden mulch, walnut shells are tough, biodegradable, and incredibly versatile.
 
In this post, we’ll explore what you can do with walnut shells, from cleaning and crafting to gardening and beyond.
 
Let’s dive into the many ways you can put walnut shells to work.
 

What Can You Do With Walnut Shells Around the House?

You can do a lot with walnut shells around the house, and most of these ideas cost you nothing but a little time.
 

1. Use Them as a Gentle Abrasive Cleaner

Ground walnut shells make an excellent natural abrasive for cleaning tough surfaces.
 
You can scrub pots, pans, and even rusty tools without scratching them up too badly.
 
Many commercial sandblasting and polishing products actually use crushed walnut shells for this exact reason.
 

2. Make a Reusable Fire Starter

Walnut shells burn slowly and evenly, which makes them fantastic fire starters.
 
Fill a paper egg carton with shells, pour melted wax over them, and you’ve got cheap, effective fire starters for your fireplace or campfire.
 

3. Create Natural Dye for Fabric and Wood

Walnut shells contain tannins that produce rich brown dyes.
 
Boil the shells in water, strain the liquid, and soak fabric, yarn, or wooden items to give them a warm, earthy tone.
 

4. Polish Metal and Wood

Crushed walnut shells work as a soft polishing agent for brass, copper, and wooden furniture.
 
Just rub them gently with a cloth to restore shine without harsh chemicals.
 

What Can You Do With Walnut Shells in the Garden?

You can also do plenty with walnut shells in the garden, and they solve several common landscaping problems.
 

1. Use Them as Mulch

Walnut shells make a durable, attractive mulch that suppresses weeds and holds moisture in the soil.
 
They break down slowly, so a single layer can last for years.
 

2. Improve Drainage in Potted Plants

A layer of walnut shells at the bottom of your pots helps water drain freely.
 
This prevents root rot and keeps your plants healthier, especially succulents and herbs.
 

3. Keep Pests Away

The rough texture of walnut shells irritates slugs, snails, and certain insects.
 
Sprinkle them around garden beds to create a natural barrier that protects your plants.
 

4. Add Them to Compost

Walnut shells are biodegradable and add valuable organic matter to compost.
 
Just crush them first so they break down faster in the pile.
 

What Can You Do With Walnut Shells for Crafts and Beauty?

You can get creative with walnut shells too, turning them into decorative and even cosmetic items.
 

1. Make Jewelry and Ornaments

Whole walnut shell halves can be painted, varnished, and turned into pendants, buttons, or holiday ornaments.
 
They’re lightweight and take paint beautifully.
 

2. Create Homemade Scrub

Finely crushed walnut shells mixed with coconut oil and sugar make a powerful exfoliating body scrub.
 
The tiny particles slough off dead skin without being too harsh.
 

3. Fill Pin Cushions and Draft Stoppers

Crushed walnut shells are a popular filling for pin cushions because they keep pins sharp.
 
You can also sew them into fabric tubes to block drafts under doors.
 

4. Use Them in Arts and Crafts Projects

Kids love gluing walnut shells onto picture frames, making little boats, or creating textured art.
 
The possibilities are pretty much endless once you start experimenting.
 

What Can You Do With Walnut Shells for Pets and Livestock?

You can even put walnut shells to work for your animals, which surprises a lot of people.
 

1. Make Bedding for Small Pets

Crushed walnut shells can be used as bedding for hamsters, gerbils, and other small animals.
 
They’re absorbent and help control odors naturally.
 

2. Create Chicken Coop Litter

Walnut shells work as coop litter that drains well and keeps things drier.
 
Just make sure they’re clean and free of any mold before use.
 

So, What Can You Do With Walnut Shells?

Walnut shells can be reused in dozens of practical ways, from cleaning and gardening to crafting and pet care.
 
Instead of tossing them, you can turn them into mulch, fire starters, scrub, dye, and more.
 
They’re free, biodegradable, and surprisingly useful once you know what to do with them.
 
So next time you crack a batch of walnuts, hold onto those shells.
 
You’ll be amazed at how many ways you can put walnut shells to good use.