How To Know When Walnuts Are Ready

You know walnuts are ready when the green outer hull starts to split open and the nut inside is fully formed.
 
If you’ve been wondering how to know when walnuts are ready, the good news is that walnut trees give you plenty of signs once you know what to look for.
 
Timing is everything with walnuts because pick them too early and the nut meat is rubbery and bitter, but wait too long and the squirrels will beat you to the harvest.
 
In this post, we’ll walk through how to know when walnuts are ready, the signs to watch for, and what to do once they’re ready to pick.
 
Let’s get into it.
 

How to Know When Walnuts Are Ready

Knowing when walnuts are ready comes down to watching the hull, the shell, and the tree itself.
 
Here are the main signs that tell you when walnuts are ready to harvest.
 

1. The Green Hull Starts to Split

The most reliable sign of when walnuts are ready is when the thick green outer hull begins to crack and split open.
 
This hull is the fleshy layer that surrounds the hard shell, and when walnuts are ready, it starts to peel away on its own.
 
Once you see those splits appearing, the nuts inside are mature and the harvest window has officially opened.
 

2. The Hull Turns Dark and Soft

As walnuts get ready to drop, the green hull darkens and turns soft, sometimes almost black.
 
This change is a clear indicator that walnuts are ready, because the hull is basically letting go of the nut.
 
When you press on the hull and it feels mushy instead of firm, you know the walnuts are ready to come off the tree.
 

3. Nuts Begin to Fall

Another easy way to know when walnuts are ready is to watch the ground under your tree.
 
When walnuts are ready, they start dropping naturally, and you’ll find them scattered on the grass or driveway.
 
A good rule of thumb is that once about a third of the nuts have fallen, the rest are ready or nearly ready to harvest.
 

4. The Shell Is Hard and the Nut Meat Is Firm

If you crack open a walnut to check, the shell should feel hard and the nut inside should be plump and firm.
 
When walnuts are ready, the inner membrane between the halves turns brown instead of white.
 
This simple test removes all the guesswork from figuring out when walnuts are ready.
 

5. The Husks Come Off Easily

When walnuts are ready, the hull should slip off the shell with little effort.
 
If you have to fight the hull or it clings stubbornly to the shell, the walnuts aren’t ready yet.
 
Give them another week or two and check again.
 

What to Do Once You Know Walnuts Are Ready

Once you’ve confirmed your walnuts are ready, the work isn’t over just yet.
 
Here’s how to handle them properly so they stay fresh for months.
 

1. Harvest Promptly

When walnuts are ready, don’t wait around, because the longer they sit on the ground, the more likely they are to get moldy or get stolen by wildlife.
 
Gather fallen walnuts daily and shake the tree gently to bring down the ones that are ready.
 

2. Remove the Hulls

Hulling is the next step after you’ve determined walnuts are ready.
 
Wear gloves because the hulls stain your hands with a stubborn brown dye.
 
You can pop the hulls off by hand or use a sturdy knife to pry them loose.
 

3. Wash and Dry the Nuts

Rinse the hulled walnuts in clean water to remove any leftover bits of hull.
 
Then spread them out in a single layer in a cool, dry, well-ventilated spot.
 
This drying process takes two to four weeks, and it’s essential because walnuts that aren’t dried properly will turn moldy in storage.
 

4. Cure and Store Them

After the initial drying, let your walnuts cure for another couple of weeks.
 
When they’re fully cured, the nut meat snaps when you break it instead of bending.
 
Store the cured walnuts in their shells in a cool, dry place, or shell them and freeze the nut meat for up to a year.
 

Mistakes to Avoid When Checking If Walnuts Are Ready

Even experienced growers slip up, so here are a few common mistakes to dodge.
 

1. Harvesting Too Early

Picking walnuts before they’re ready leaves you with shriveled, bitter nut meat that never improves.
 

2. Leaving Hulls On Too Long

Once walnuts are ready and hulled, don’t let the hulls sit against the shell, because the moisture causes rot and stains the shell.
 

3. Skipping the Drying Stage

Rushing the drying process is the fastest way to ruin a good harvest, even when you’ve nailed the timing of when walnuts are ready.
 

So, How Do You Know When Walnuts Are Ready?

You know walnuts are ready when the green hull splits, the nuts start falling, and the shell feels hard with firm nut meat inside.
 
Watch those signs closely, harvest promptly, and dry your walnuts properly, and you’ll enjoy a beautiful homegrown harvest all winter long.
 
Hope this guide on how to know when walnuts are ready makes your next harvest the best one yet.