Walnut vs Rowan: Which Should You Plant?

Comparing walnut and rowan for your garden

February 25, 2025 | 8 min read
Walnut tree and rowan tree comparison

Choosing the right tree for your garden can be a challenge, especially when you're deciding between two popular options like walnut and rowan. As a gardener with over 15 years of experience in Staffordshire, I've worked with both and can offer some practical insights to help you make the best choice for your landscape.

Quick Answer

If you're looking for a striking tree with ornamental value, go for the rowan. For a tree that provides shade and nut production, choose walnut.

Understanding Tree Characteristics

Before diving into which tree suits your garden best, let's understand their characteristics.

Walnut Trees

Walnuts, particularly the common English walnut, grow to a significant height, often reaching 20 metres. They're a great choice if you have the space and desire for a tree that provides ample shade and produces edible nuts. However, keep in mind that walnuts release a chemical called juglone, which can inhibit the growth of some plants nearby.

Rowan Trees

The rowan, or mountain ash, is a smaller tree, generally reaching about 10 metres. It's known for its beautiful clusters of red berries and delicate pinnate leaves, making it an excellent ornamental choice. The rowan is well-suited for smaller gardens and provides visual interest year-round, especially in the Midlands where the vibrant autumn colours stand out.

Comparing Walnut and Rowan

Here's a quick comparison to consider:

Feature Walnut Rowan
Height Up to 20m Up to 10m
Growth Speed Medium Fast
Soil Preference Well-drained, loamy Moist, well-drained
Maintenance Low Low

Benefits of Planting Each Tree

Both walnuts and rowans offer unique benefits:

  • Walnut: Provides shade and produces nuts, beneficial for larger gardens.
  • Rowan: Ornamental beauty with berries attracting birds, perfect for smaller spaces.

Planting Tips for the UK Climate

Here in Staffordshire and the wider Midlands, both trees can thrive with the right care.

Walnut Planting Tips

Plant your walnut in a sunny, sheltered spot with well-drained soil. It's best to plant young trees in late autumn or early spring. Remember, they need space to grow, so avoid planting too close to buildings or other trees.

Rowan Planting Tips

Rowans prefer moist, well-drained soil and can tolerate a range of conditions. They're quite hardy, making them suitable for more exposed sites. Plant them in autumn for best results.

Frequently Asked Questions

Can walnut trees affect other plants?

Yes, walnut trees release juglone, which can inhibit the growth of some plants. It's best to avoid planting sensitive species nearby.

Are rowan berries edible?

Rowan berries are not typically eaten raw due to their bitterness, but they can be used to make jellies and jams after proper preparation.

Do these trees require a lot of maintenance?

Both walnut and rowan trees are relatively low-maintenance once established, requiring minimal pruning and regular watering during dry spells.

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