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Walnuts do grow in the UK.
In fact, you can find walnut trees growing in gardens, parks, and even some wild spots across the country.
But if you’ve ever wondered whether walnuts grow in the UK, the short answer is yes, they absolutely can.
The common walnut (Juglans regia) is the species most often grown here.
It’s not the easiest tree to grow, but it’s definitely possible in the right conditions.
In this post, we’ll explore how walnuts grow in the UK, the best varieties to choose, and what you need to know to get a decent harvest.
Let’s get into it.
Why Walnuts Can Grow in the UK
Walnuts can grow in the UK because the climate in many parts of the country suits them reasonably well.
They’re not native to Britain, but they’ve been planted here for centuries.
The Romans are thought to have introduced them, and they’ve naturalised in various places ever since.
Here’s why they can thrive here:
1. Mild Temperatures Suit Them
Walnuts prefer a temperate climate without extremes.
The UK’s generally mild summers and cool winters are actually quite suitable for walnut trees.
They don’t like scorching heat or deep freezes, so our weather often works in their favour.
That said, late spring frosts can be a problem.
If frost hits when the tree is flowering, it can wipe out that year’s crop.
So while walnuts grow in the UK, a late frost is one of the biggest risks.
2. Plenty of Rainfall Helps
Walnut trees need a decent amount of moisture, especially when they’re young.
The UK’s regular rainfall means they often get enough water without much effort.
They don’t like waterlogged soil, though, so good drainage is essential.
If you’re planting a walnut tree, choose a spot where water doesn’t pool after heavy rain.
3. Long Daylight Hours in Summer
Walnuts need a good stretch of sunlight to ripen their nuts properly.
UK summers offer long daylight hours, which gives them plenty of time to photosynthesise and develop fruit.
The further south you are, the better your chances of a good crop.
In northern parts of Scotland, walnuts grow but often struggle to ripen fully.
Best Walnut Varieties to Grow in the UK
If you want to grow walnuts in the UK, choosing the right variety makes a huge difference.
Some are better suited to our climate than others.
Here are some top picks:
1. ‘Buccaneer’
This is one of the most popular walnuts for the UK.
It’s self-fertile, which means you only need one tree to get nuts.
‘Buccaneer’ is also known for being reliable and producing good crops.
It’s a great choice if you’re serious about growing walnuts in the UK.
2. ‘Broadview’
Another self-fertile variety, ‘Broadview’ is hardy and productive.
It tends to crop earlier than some other walnuts, which is helpful in shorter growing seasons.
If you’re in a cooler part of the UK, this one is worth considering.
3. ‘Rita’
‘Rita’ is a newer variety that’s gaining popularity.
It’s compact, making it suitable for smaller gardens.
It also crops well and has good resistance to common problems.
4. ‘Franquette’
This is a traditional French variety that’s been grown in the UK for years.
It’s known for its excellent flavour and reliable cropping.
It does need a pollinator, so you’ll need at least two trees.
How to Grow Walnuts in the UK
Growing walnuts in the UK isn’t difficult, but they do need some care to get established.
Here’s what you need to know:
1. Choose the Right Spot
Walnut trees need full sun and shelter from strong winds.
They also need plenty of space, as they can grow quite large.
A mature walnut tree can reach 15 metres or more, so don’t plant one too close to your house.
2. Plant in Well-Drained Soil
Walnuts hate soggy roots.
Make sure the soil drains well and isn’t prone to waterlogging.
If your soil is heavy clay, consider planting on a slight mound to improve drainage.
3. Be Patient
Walnut trees take time to mature.
You might wait five to ten years before you get a decent crop.
But once they start producing, they can keep going for decades.
4. Protect from Frost
Late frosts are the enemy of walnut growers in the UK.
If you can, plant in a spot that’s less prone to frost pockets.
You can also cover young trees with fleece if a cold snap is forecast.
5. Prune Carefully
Walnuts bleed sap if you prune them at the wrong time.
The best time to prune is in late summer or early autumn.
Avoid pruning in winter or early spring when the sap is rising.
So, Do Walnuts Grow in the UK?
Walnuts do grow in the UK, and with the right variety and a bit of patience, you can enjoy your own homegrown nuts.
The climate here suits them well in many areas, especially in the south.
Just remember to choose a self-fertile variety if you only have room for one tree, and protect against late frosts.
With time and care, growing walnuts in the UK is absolutely achievable.
Hope this post has helped you understand whether walnuts grow in the UK and how to get started.