How To Grow English Walnuts

You can grow English walnuts by planting them in deep, well-drained soil with plenty of sunlight and space for their large root system.
 
English walnuts, also known as Persian walnuts, are prized for their rich flavor and thin shells, and growing them at home is a rewarding long-term project.
 
If you’ve ever wondered how to grow English walnuts from seed or sapling, the process is simpler than you might think, though it does require patience.
 
These trees can live for over a century and produce nuts for decades, so getting the basics right from the start really pays off.
 
So let’s walk through exactly how to grow English walnuts, from choosing the right spot to harvesting your first crop.
 

How to Grow English Walnuts: The Basics

 
Growing English walnuts successfully comes down to a few key factors: climate, soil, and sunlight.
 
Here’s what you need to know before you plant.
 

1. Choose the Right Climate

 
English walnuts thrive in temperate climates with cold winters and warm, dry summers.
 
They need a dormant period with temperatures around 45°F or lower to produce nuts properly.
 
If you live in a region with mild winters, growing English walnuts can be tricky because the trees may not get enough chill hours.
 
They’re hardy in USDA zones 4 through 9, though late spring frosts can damage new growth.
 

2. Pick a Spot with Full Sun and Deep Soil

 
English walnuts need at least six to eight hours of direct sunlight daily.
 
They also develop a deep taproot, so the soil should be at least six feet deep and well-drained.
 
Avoid planting in areas where water pools after rain, since soggy roots can kill the tree.
 
A slightly sloping site is ideal because it allows excess water to drain away naturally.
 

3. Start with a Grafted Sapling for Best Results

 
You can grow English walnuts from seed, but trees grown from seed often produce nuts that are smaller, harder, or less flavorful than the parent.
 
For reliable harvests, buy a grafted sapling from a reputable nursery.
 
This ensures you’re growing a known variety like Chandler, Hartley, or Franquette, all of which are popular English walnut cultivars.
 
Plant your sapling in early spring or late fall when the tree is dormant.
 

How to Plant and Care for English Walnut Trees

 
Once you’ve picked your spot and your sapling, planting and ongoing care will determine how well your English walnuts grow.
 
Here’s how to get it right.
 

1. Planting Your English Walnut Sapling

 
Dig a hole twice as wide as the root ball and just as deep.
 
Place the sapling in the hole, making sure the graft union sits about two inches above the soil line.
 
Backfill with native soil, tamp it down gently, and water thoroughly.
 
Space multiple trees at least 30 to 40 feet apart, since English walnuts spread wide and need room for their roots.
 

2. Watering and Mulching

 
Young English walnut trees need consistent moisture during their first few years.
 
Water deeply once a week during dry spells, letting the top inch of soil dry out between waterings.
 
Spread a layer of mulch around the base, but keep it a few inches away from the trunk to prevent rot.
 
Once established, English walnuts are fairly drought-tolerant and need less frequent watering.
 

3. Fertilizing and Pruning

 
Feed young trees with a balanced fertilizer in early spring, but don’t overdo it.
 
Too much nitrogen encourages leafy growth at the expense of nut production.
 
Prune English walnuts in late winter to remove dead or crossing branches and shape the canopy.
 
As the tree matures, pruning mainly involves thinning the center so sunlight reaches the inner branches.
 

4. Managing Pests and Diseases

 
English walnuts are susceptible to walnut blight, anthracnose, and pests like codling moths and aphids.
 
Planting blight-resistant varieties and keeping the area clean helps reduce problems.
 
Avoid wetting the foliage when you water, and remove fallen leaves and nuts to stop diseases from overwintering.
 
If pests become a serious issue, consult your local extension office for safe treatment options.
 

When to Harvest English Walnuts

 
If you’re growing English walnuts, harvest time is the payoff you’ve been waiting for.
 
Here’s how to know when and how to pick them.
 

1. Watch for the Hulls to Split

 
English walnuts are ready to harvest in late summer to early fall, usually September or October.
 
The outer green husk will start to split open, revealing the hard shell inside.
 
When you see husks cracking and nuts beginning to drop, it’s time to start gathering.
 

2. Harvest and Dry Properly

 
Shake the branches gently to knock loose nuts to the ground, or pick them by hand.
 
Remove the husks right away, then rinse the shells and spread them out to dry in a warm, airy spot for one to two weeks.
 
Proper drying is crucial for how to grow English walnuts that store well, since moist nuts mold quickly.
 
Once fully dry, store your English walnuts in a cool, dark place or freeze them for longer shelf life.
 

So, How to Grow English Walnuts?

 
You can grow English walnuts by planting grafted saplings in deep, well-drained soil with full sun and plenty of space.
 
With consistent watering, light pruning, and a watchful eye for pests, your trees will reward you with rich, homegrown nuts for decades.
 
Growing English walnuts takes patience, since trees can take five to seven years to produce their first real harvest.
 
But once they start producing, you’ll have more English walnuts than you know what to do with.