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Harvesting Walnuts – The Right Way to Pick & Store Walnuts for Freshness

Harvesting walnuts is a part of our fall routine most years. We don't have walnut trees yet, but our neighbors have black walnut trees and English walnut trees. I normally use the black walnuts for their hulls to make black walnut tincture, and use the English walnuts for their nut meats.

English (Carpathian) walnuts

Both types of walnuts have a tough green outer hull, but the hulls on English walnuts usually split open and are easy to slip off. Black walnuts require more effort to hull, and their shells are thicker and nut meats smaller.

English walnuts have thinner husks and shells, and are easily cracked with a lever style nut cracker. In this post I'll talk about harvesting English walnuts, picking the fresh nuts and drying them for storage in the shell. We'll also cover the best way to store nuts out of the shell.

Note: The maple candied walnut recipe has moved here.

Harvesting Walnuts

In the fall of 2014, I got a phone call from one of my neighbors – “Would I like walnuts?” It turns out that other neighbors, relatives of theirs, have two beautiful 89 year old Carpathian walnut trees in their front yard, both of which produced a bumper crop that year.

Those trees were sent directly from the Carpathian mountain area all those years ago, at a cost of $1 each, which was big money back then. They came with an apology note about how expensive they were. (I heard this story from the folks who owned the trees as we picked nuts. The farm is still in the same family, and the trees were purchased by the grandfather of the current owner.)

We were blessed with many buckets of nuts, enough to share with family and friends. I had to learn how to process walnuts.

Since then, we get called when there are excess nuts. Some years they don't have any to spare, but luckily, walnuts can store a long time in the shell. With what we store from year to year, I haven't had to buy walnuts since 2014.

Gathering the Nuts

Harvesting walnuts (in this case, harvesting English walnuts) is simple. We gather the fresh nuts in a bucket after they fall to the ground. Because we're gleaning at the neighbor's place, we only pick up fallen nuts.

If you were harvesting English walnuts from your own tree, you could go ahead and grab nuts off the lower branches as soon as the green husks start to split open. Wear gloves if you don't want to stain your hands dark brown.

Avoiding Bitter Walnuts

Walnut husks are extremely high in tannins, which are bitter in flavor. The longer the hull stays on the walnut, the more bitter the nut inside is likely to be. In the book “The Resilient Gardener”, the author notes how she was able to gather and use nuts in her area that others avoided “because they were too bitter”. By gathering promptly as they fell, hulling immediately and curing, she quickly had a stockpile of free, delicious nuts.

As we sort nuts, we set aside any that have stuck-on blackened hulls, along with undersized nuts and damaged nuts, for animal consumption. (The chickens don't seem to mind the bitter flavor.) Our chickens LOVE walnuts, and the walnut shells act as grit.

The video below shows the walnut sorting process. (Make sure ad blocker is disabled for video to play.) We remove the hulls and moldy nuts are discarded.

Walnut Harvesting Tools

For several years we harvested walnuts by hand, but this year we tried a ball style walnut harvester (similar to the Garden Weasel Medium Nut Gatherer). Holy smokes did that speed up picking! There are similar nut pickers sized for larger nuts, and even powered nut harvesters.

The video below shows the walnuts in their green hulls, and harvesting walnuts with a rolling nut picker.

Drying Walnuts for Storage

I was instructed by the tree owners to spread the fresh walnuts out in a warm, dry, shaded place to cure for at least a month before using them. I've seen mixed recommendations online on how long to dry. I suppose it depends a lot on your conditions.

The goal of drying walnuts for storage is to reduce the moisture within the nuts to prevent mold growth. When properly dried, the nuts inside should have a nice “snap” and not be rubbery.

At this point, the walnuts should hold for up to three years in the shell in cool, dry conditions (if you don't eat them all first). So far I've stored my fresh walnuts for over two years at a time with no loss in quality.

Sometimes,I spread my walnuts out on the mesh shelves of my greenhouse to dry. (I did find that the mice got a few of them when I used this option.) Once I have them spread on the shelves, I cover them with burlap to keep out the light.

drying walnuts in the shell

Because of the mouse risk, I usually dry my walnuts in trays in the finished basement or in the living room. I spread the walnuts out in shallow cardboard boxes, or in my black planting trays that I use for seed starting.

Once the fresh walnuts are dry and cured, I store them in the shell. We keep ours in five gallon or one gallon buckets with lids. (Mice do love walnuts, so make sure any storage container you use is rodent proof.)

Gamma lids make it easy to get into the buckets as needed. Store your walnuts in a cool, dry location out of direct sunlight. Don't store the buckets in the root cellar. We tried this (thinking the buckets would protect the walnuts) and had issues with nuts getting moldy inside.

Easy to Use Walnut Cracker

For cracking our monster nut harvest, I was lucky enough to find a great deal Reed's Rocket Nut Cracker at the local kitchen store. If you do any serious volume of nut cracking, you need one of these nut crackers.

If you have a smaller nut or odd sized nut, like a hazelnut, just fold a bit of dish towel and tuck it in the cracker with the nut to make sure it fits tight enough to crack. (Looking for a black walnut cracker? Try this heavy duty nut cracker instead.)

lever nut cracker

This cracker saved so much time and so much easier to use than our old “pincer” type cracker. I got one for our neighbors who shared the nuts, too. To avoid flying pieces of shell, we covered the cracker with a cloth as we cracked. (I cut up an old, worn bath towel, which we use in place of paper towels in the kitchen.)

lever nut cracker covered with a cloth

The nuts come out neatly, too, often in clean halves instead of bits and pieces. It's rather fun to use, too.

cracking walnuts with a lever nut cracker

The Best Way to Store Walnuts

As mentioned above, fresh walnuts, properly dried, will keep for three years in the shell. The shell acts as a natural protective barrier. This is how I store most of my walnuts.

Once shelled, the oils in walnuts quickly go rancid. You should either use freshly shelled nuts right away or store them in the refrigerator or freezer for best quality. In the fridge they should keep for six months, in the freezer, safely a year.

You may be thinking, “But they don't store walnuts cold at the grocery store.”  Once you've had a chance to compare the taste of freshly shelled versus pre-shelled, you'll know that they probably should.

Many stores do turn over product fairly quickly, but store nuts are, in general, not optimally processed and not terribly fresh. It's cost prohibitive.

It's safe to eat raw walnuts, but we usually take the time to make Crispy Walnuts.

What are Crispy Walnuts?

Crispy walnuts are raw walnuts soaked in salt water and then dehydrated until crisp. Soaking and dehydrating removes excess tannins, phytic acid and enzyme inhibitors.

Maybe you've encountered a sore, puckery mouth after eating several walnuts? That's the tannins.

Some people also get a “heavy” feeling in their belly after eating nuts. That's the enzyme inhibitors. They're great for keeping the nuts from sprouting too soon, but can make the hard to digest.

After the soaking and dehydrating, the walnuts taste almost like roasted walnuts. No more pucker mouth and no more heavy gut.

When we want to get nuts ready for eating, we shell a bunch of nuts and process them into Crispy Nuts ala Nourishing Traditions.

Crispy Walnut Recipe

To make crispy nuts, mix together in a non-reactive bowl:

4 cups walnuts (also works with other nuts)
1 tablespoon sea salt
Enough water to cover

Stir and leave on the counter overnight, or at least 7 hours. Drain well in a colander and dehydrate at 125°F for around 24 hours, depending on how crispy you like them.

Store them in the freezer to prevent rancidity. Don't forget to date and label them. They will keep for months. For even better quality, vacuum seal them.

fresh walnuts on cutting board

Using Walnuts

Walnuts are great as a snack, in granola or hot cereal and for baking. There are number of recipes featuring walnuts on the site (you can view our entire recipe listing here). Some of my favorites are brownies, coconut oil fudge and cranberry walnut pie. Maple candied walnuts are delicious and make a great gift.

What are your favorite ways to use walnuts? Do you have any walnut harvesting tips to share? Leave a comment and share your thoughts.

bowl of walnuts in the shell

Originally published in 2014, last updated in 2019.

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    1. I’ve never worked with them, but it looks like processing them may be more similar to dealing with black walnuts. The husk is thicker than a Carpathian walnuts husk, and the nuts more difficult to crack, though not as difficult to crack as black walnuts.

      I hunted around a bit and couldn’t find specific guidelines, but hulling and drying is needed for every nut that I’ve come across so far, so it seems like a good option. Maybe check with the nursery where you bought them to confirm? Odds are it will be several years before you get a harvest.

  1. Thank you so much for the information! I learned a lot from this article. I didn’t know about the salt water soak and will try that asap. I really appreciate all that you do.

  2. This post is extremely informative! We currently live in Germany and found out we have an English walnut tree. I had no idea you had to cure them first. You said for curing them they needed to be in a warm, dry, shaded place for about a month; Is a dark place okay, such as a basement? More specifically, the laundry room as it would be warmer from the occasional dryer usage? I wasn’t sure if they should still get a little indirect sunlight or not. Thanks in advance!

    1. Dark should be fine, as long as there is good air flow and warmth.

      We’ve run into trouble when we tried to stack them a little. We tried curing them in our living room one year, and even though the floor is heated, the nuts in the bottom of the plastic trays didn’t get enough air flow and started to mold.