How To Make Stain Out Of Walnuts

You can make stain out of walnuts by boiling the husks or shells to extract their natural tannins and pigment.
 
This is one of the oldest natural dyes and wood stains used by artisans for centuries.
 
If you’ve been wondering how to make stain out of walnuts for your next woodworking or craft project, the good news is that it’s surprisingly simple and requires very few materials.
 
Black walnuts, in particular, are prized for the rich, dark brown stain that comes from their outer hulls.
 
In this post, we’ll walk through how to make stain out of walnuts step by step, the best methods, and a few tips to get the perfect shade.
 
Let’s dive in.
 

Why Making Stain Out of Walnuts Works So Well

Making stain out of walnuts works so well because walnut hulls are packed with juglone and tannins, the natural compounds that create deep color.
 
Here’s why this natural stain is such a favorite:
 

1. Walnut Hulls Are Loaded With Natural Tannins

The black walnut’s outer husk is full of tannins, which are the same compounds that give tea and red wine their color.
 
When you boil or soak the hulls, these tannins release into the water and create a strong, lasting dye.
 
This is the core reason why making stain out of walnuts delivers such rich results.
 

2. Walnut Stain Penetrates Wood Deeply

A stain made from walnuts doesn’t just sit on top of wood, it soaks into the grain.
 
That means the color develops depth and warmth that many synthetic stains struggle to match.
 
It’s a big reason woodworkers love learning how to make stain out of walnuts.
 

3. It’s Non-Toxic and Budget-Friendly

Since you’re making stain out of walnuts using only natural materials, there are no harsh chemicals involved.
 
And if you have a walnut tree nearby, the hulls are completely free.
 
That combination of safety and savings is hard to beat.
 

How to Make Stain Out of Walnuts Step by Step

Learning how to make stain out of walnuts is an easy weekend project, and these steps will get you there.
 

1. Gather Your Walnut Hulls

Start by collecting black walnut hulls, which are the green or brown outer coverings, not the hard shells inside.
 
If you’re making stain out of walnuts using the hard shells instead, that works too, but the color will be lighter.
 
Wear gloves, since walnut hulls will stain your hands for days.
 

2. Soak or Boil the Hulls

Place your hulls in a pot and cover them with water.
 
Simmer them for one to two hours to pull out the tannins, or let them soak for several days for a slower, gentler extraction.
 
The longer you simmer, the darker your walnut stain will become.
 

3. Strain the Liquid

Once the water has turned a deep brown, strain out the hulls using a fine mesh or cheesecloth.
 
What’s left is your homemade walnut stain, ready to use.
 
This is the moment where your effort in making stain out of walnuts really pays off.
 

4. Test and Apply Your Stain

Always test your stain on a scrap piece of wood first, since the shade can vary.
 
Apply it with a brush or rag, let it soak in, then wipe off the excess.
 
You can add layers to deepen the color from a soft tan to a deep espresso brown.
 

Tips for Getting the Best Results

A few smart moves will help you get the most out of making stain out of walnuts.
 

1. Add a Little Vinegar

A splash of vinegar helps set the color and can shift the tone slightly.
 
Some makers add rusty nails to the mix for a darker, grayer walnut stain.
 

2. Seal Your Project After Staining

Once your walnut stain dries, seal the wood with oil or polyurethane.
 
This protects the color and keeps your natural stain looking rich for years.
 

3. Store Leftover Stain Properly

Keep any extra walnut stain in a sealed jar away from sunlight.
 
It’ll last for months, ready for your next project.
 

So, How Do You Make Stain Out of Walnuts?

You make stain out of walnuts by boiling or soaking the hulls to release their natural tannins and pigments.
 
It’s a simple, affordable, and non-toxic way to create a beautiful, long-lasting wood stain.
 
Whether you’re a woodworker or a crafter, learning how to make stain out of walnuts opens up a world of natural color.
 
So gather those hulls, fire up the pot, and start making stain out of walnuts for your next project.