How To Plant Black Walnuts From Nuts

You can plant black walnuts from nuts by collecting mature nuts in the fall and planting them outdoors or stratifying them for spring.
 
Black walnuts are not like the store-bought walnuts you might be used to.
 
They have a thick, tough husk and a notoriously hard shell that makes planting them from nuts a bit of an adventure.
 
But if you’re patient, planting black walnuts from nuts can be a rewarding way to grow a long-lived shade tree that produces nuts for generations.
 
In this post, we’ll walk through exactly how to plant black walnuts from nuts, including how to collect, prepare, and care for them so they actually germinate.
 
Let’s dig in.
 

How to Plant Black Walnuts From Nuts

Planting black walnuts from nuts starts with getting your hands on good, viable nuts.
 
Here’s how to do it step by step.
 

1. Collect Black Walnuts in the Fall

The best time to gather black walnuts for planting is right after they drop from the tree in autumn.
 
Look for nuts that are still green or just turning yellow-brown, with the husk intact.
 
Avoid nuts that are already black, mushy, or full of holes, as those are usually rotten or infested.
 
Once you’ve collected them, remove the husks.
 
You can do this by stomping on them with boots, rubbing them on a rough surface, or using a hammer carefully.
 
Just be warned: black walnut husks stain everything they touch, so wear old gloves and clothes.
 

2. Stratify the Nuts for Germination

Black walnuts need a period of cold, moist conditions, called stratification, before they will sprout.
 
You can accomplish this naturally by planting the nuts directly outdoors in the fall.
 
Or, you can mimic winter by storing them in a bag of moist sand or peat moss in your refrigerator for 90 to 120 days.
 
If you plant black walnuts from nuts in the fall, nature handles stratification for you.
 
But if you’re planting in spring, the fridge method is the way to go.
 

3. Choose the Right Spot for Planting Black Walnuts

Black walnut trees are allelopathic, meaning they release a chemical called juglone that can harm certain plants nearby.
 
So when planting black walnuts from nuts, pick a spot away from your vegetable garden, flower beds, and other trees that might be sensitive.
 
They also need full sun and well-drained soil.
 
Black walnuts grow deep taproots, so they don’t like being transplanted later.
 
That’s why it’s best to plant the nuts right where you want the tree to grow permanently.
 

How to Plant Black Walnuts From Nuts Step by Step

Once your nuts are ready, planting them is pretty straightforward.
 
Here’s the process.
 

1. Plant Nuts About 1 to 2 Inches Deep

Dig a hole or trench about 1 to 2 inches deep and place each nut on its side.
 
Space them about 6 to 12 inches apart if you’re planting several.
 
Cover them with soil and press down gently.
 
If you’re planting black walnuts from nuts in the fall, mulch the area with leaves or straw to protect them through winter.
 

2. Keep the Soil Moist but Not Soggy

Black walnut nuts need consistent moisture to germinate.
 
Water them regularly if rainfall is sparse, but don’t let them sit in standing water.
 
Good drainage is key when planting black walnuts from nuts because soggy soil can rot the nut before it sprouts.
 

3. Protect Young Seedlings From Wildlife

Squirrels, mice, and other critters love to dig up black walnuts.
 
After planting black walnuts from nuts, cover the area with hardware cloth or a wire mesh cage to keep them safe.
 
Once the seedlings emerge and grow a few inches tall, you can remove the protection.
 

When to Expect Germination and Growth

Black walnuts are slow growers, so patience is essential.
 
If you plant black walnuts from nuts in the fall, they typically sprout the following spring or even later.
 
Some nuts may take up to two years to germinate, so don’t give up too soon.
 
Once they sprout, the seedlings will grow steadily, and within a few years, you’ll have a young tree ready to take off.
 

1. First Year Growth Is Modest

In the first year, black walnut seedlings focus on building roots, so top growth is slow.
 
Don’t be alarmed if they only reach a few inches tall.
 
The real action is happening underground.
 

2. Later Years Bring Faster Growth

After the first year, growth speeds up, and your tree may add 1 to 2 feet per year.
 
With good care, planting black walnuts from nuts can eventually give you a majestic tree that lives for over a century.
 

So, How Do You Plant Black Walnuts From Nuts?

You plant black walnuts from nuts by collecting mature nuts in the fall, removing the husks, and either planting them immediately or stratifying them for spring.
 
Plant them 1 to 2 inches deep in a sunny, well-drained spot away from juglone-sensitive plants.
 
Keep the soil moist, protect them from wildlife, and be patient because germination can take months.
 
With time, planting black walnuts from nuts rewards you with a sturdy, nut-producing tree that can be enjoyed for generations.