What Can You Do With Green Walnuts

Green walnuts can be used in a surprising number of ways, from making traditional remedies to crafting unique culinary treats.
 
If you’ve ever spotted those hard, unripe green walnuts on a tree and wondered what on earth you can do with them, you’re in the right place.
 
These early-season nuts are packed with potential, but they need to be handled differently than the mature brown walnuts you might be used to.
 
In this post, we’ll explore exactly what you can do with green walnuts, including how to harvest them, the best recipes to try, and some clever non-food uses that might surprise you.
 
Let’s dive in.
 

What Can You Do With Green Walnuts?

The short answer is: quite a lot, as long as you know what you’re doing.
 
Green walnuts are the unripe fruit of the walnut tree, harvested in early summer before the shell hardens.
 
At this stage, they are soft enough to pierce with a knife and have a bright, citrusy, and slightly bitter flavor.
 
Because they haven’t developed their hard shell yet, you can use the entire nut, including the outer husk.
 
Here are some of the most popular and practical things you can do with green walnuts.
 

1. Make Traditional Nocino Liqueur

One of the most famous uses for green walnuts is making nocino, a dark, spiced Italian liqueur.
 
You harvest the green walnuts on St. John’s Day in late June, quarter them, and steep them in alcohol with sugar, cinnamon, cloves, and lemon peel.
 
After a few months, you strain the liquid and bottle it.
 
The result is a rich, warming digestif that tastes like Christmas in a glass.
 
It’s a fantastic way to preserve the essence of green walnuts for years.
 

2. Pickle Them for a Savory Treat

Pickled green walnuts are a classic British specialty, often enjoyed with cheese or cold meats.
 
You prick the green walnuts all over, soak them in brine for several days to remove bitterness, then preserve them in spiced vinegar.
 
After a few weeks, they become tender and tangy, with a unique texture that’s somewhere between a pickle and a nut.
 
If you’re wondering what to do with a bumper crop of green walnuts, pickling is a great answer because it uses up a lot of them at once.
 

3. Whip Up Green Walnut Jam or Marmalade

Green walnuts can also be turned into a rich, dark jam.
 
You boil the chopped nuts with sugar, lemon juice, and spices until the mixture thickens.
 
The natural pectin in the nuts helps it set, and the bitterness mellows into a deep, complex flavor.
 
Spread it on toast or use it as a glaze for roasted meats.
 
It’s a clever way to use green walnuts that might otherwise go to waste.
 

4. Create Tinctures and Homemade Remedies

Beyond the kitchen, green walnuts have a long history in folk medicine.
 
You can chop them and steep them in alcohol to make a tincture, or infuse them in oil for topical use.
 
Traditionally, green walnut tinctures were used to support digestive health and as a general tonic.
 
Always consult a professional before using any homemade remedy, but it’s a fascinating way to use green walnuts.
 

Other Creative Uses for Green Walnuts

If you’re still asking what you can do with green walnuts, here are a few more ideas that don’t involve eating or drinking them.
 

1. Natural Dye for Fabric and Wood

The husks of green walnuts are loaded with juglone, a compound that stains everything it touches a deep brown.
 
You can boil the chopped nuts to make a natural dye for fabric, yarn, or even wood.
 
It’s a sustainable way to add rich, earthy color to your projects.
 
Just be sure to wear gloves, because this stuff stains skin for days.
 

2. Pest Repellent in the Garden

Green walnuts contain compounds that are toxic to some pests.
 
You can chop them up and soak them in water to create a spray that deters certain insects and even some invasive plants.
 
However, be careful, as juglone can also harm beneficial plants, so use it wisely and keep it away from sensitive garden beds.
 

3. Fish Poisoning (Traditional Use)

In some traditional cultures, green walnuts were crushed and thrown into slow-moving water to stun fish, making them easier to catch.
 
This is not a method we recommend today for ethical and legal reasons, but it’s a historical example of what people have done with green walnuts.
 
It shows just how potent the compounds in these unripe nuts can be.
 

How to Harvest and Prepare Green Walnuts

Before you can do anything with green walnuts, you need to harvest them at the right time.
 
The ideal window is in late June or early July, when the nuts are still soft enough to cut through with a knife.
 
If the shell has started to harden, it’s too late for most recipes.
 
Always wear gloves when handling green walnuts, because the juice stains and can cause skin irritation.
 
Once harvested, use them fresh or process them immediately, as they mold quickly.
 
If you’re not ready to use them, you can freeze them whole for later.
 

1. Testing for Readiness

Pierce a green walnut with a skewer.
 
If it goes through easily, it’s perfect.
 
If it’s tough, wait a few days or move on to another tree.
 

2. Removing Bitterness

Many green walnut recipes require soaking or boiling to remove some of the bitterness.
 
For pickling, a brine soak is essential.
 
For nocino, the alcohol and sugar balance the bitterness over time.
 

3. Safety First

Never eat green walnuts raw in large quantities, as they contain tannins and juglone that can upset your stomach.
 
Always process them properly before consumption.
 

So, What Can You Do With Green Walnuts?

Green walnuts can be turned into liqueur, pickles, jam, tinctures, natural dye, and even garden sprays.
 
The key is to harvest them at the right time, handle them with care, and follow tested recipes to avoid bitterness or toxicity.
 
Whether you’re a forager, a home cook, or a crafty DIYer, there’s a green walnut project out there for you.
 
So next time you see those unripe nuts on a tree, don’t ignore them.
 
Now you know exactly what you can do with green walnuts.