Why Cedar Earns Its Place in the Garden

Cedar has a quiet confidence about it. It weathers to a soft silver-grey, smells wonderful when cut, and holds its shape through wet winters and dry summers. For garden rooms, shepherd huts and cottage-style outdoor living, it is often the first timber that comes to mind. But "cedar" is not a single product. The choice between Western red cedar, British grown cedar and other homegrown alternatives affects cost, durability, appearance and how much maintenance you will face. Here is how to compare them before you place an order.

Western Red Cedar: The Benchmark for Cladding

Western red cedar (Thuja plicata) is the timber most people picture. Grown in the Pacific Northwest, it is lightweight, dimensionally stable and naturally resistant to decay thanks to extractives called thujaplicins. It takes stains and oils beautifully, and it is easy to work with hand tools. For cladding, look for boards with tight growth rings and minimal sapwood. Grades such as clear or A grade give a clean, uniform face; knotty grades cost less and suit a more rustic garden room or shepherd hut. Durability is usually class 2, meaning it performs well for 15 to 25 years above ground with some care. Keep end grain sealed and allow air to move behind the boards.

British Grown Alternatives: Lawson Cypress, Larch and Douglas Fir

British grown Western red cedar is available, but it behaves differently from imported stock. Faster growth means wider rings and more sapwood, which is less durable. It can still work well for cladding if you select carefully and finish it properly, but expect more knots and variation. Other homegrown options are worth considering:

• Lawson cypress: a close relative, often sold as British cedar. Fragrant and stable, though slightly more brittle.
• European larch: a traditional cottage choice with durability class 3 and a warm honey colour that fades to grey. It needs a finish to resist rot.
• Douglas fir: stronger and often used for framing or structural elements, but less durable than cedar in wet conditions.
• Sweet chestnut and oak: excellent for exposed posts and frames, but heavier and more expensive.

Cladding, Framing and Fixings: Getting the Details Right

For cladding, 19–20mm boards are typical, fixed over 25mm battens to create a ventilated cavity. Use stainless steel A2 or A4 screws or nails — galvanised fixings can stain the timber. Leave a small gap between boards for movement and drainage. Profiles matter: feather edge is cheap and traditional, shiplap interlocks for better weather protection, and tongue-and-groove gives a neat, cottage look for garden rooms. For framing, do not assume cedar is the best choice. Treated softwood in C16 or C24 grade is stronger, cheaper and hidden from view. Save cedar for surfaces you see and touch. If you do use cedar structurally, keep it dry and well ventilated, and account for its softness — it dents more easily than oak or larch.

Shepherd Huts and Cottage Outdoor Living: Small Buildings, Big Decisions

Shepherd huts have curved roofs and tight spaces, so cladding needs to bend without splitting. Western red cedar is ideal here, especially in narrower boards or shingles. British grown cedar can work but may need more careful nailing to avoid splits. For garden rooms, consider how the building will be used: a home office needs stable internal temperatures, so insulation and ventilation matter as much as the cladding species. Cottage-style outdoor living — pergolas, outdoor seating, planters — suits cedar for its natural oils and resistance to rot. Mixing species is fine, but keep finishes consistent. A single coat of UV oil on all cedar surfaces will help them age evenly.

Ordering Timber: Grades, Moisture and Quantities

Before you buy, ask three questions: what grade, what moisture content, and where was it grown? For cladding, kiln-dried timber at 12–15% moisture content is best; air-dried stock can shrink and cup after installation. Order 10–15% extra for cuts, defects and future repairs. Store timber flat, off the ground, and let it acclimatise for a few days before fixing. Request a sample board or two so you can see the colour and grain. If you are comparing British grown cedar with imported Western red cedar, weigh up the lower transport miles against the higher durability and consistency of imported stock. Neither is wrong — the right choice depends on your budget, your finish, and how much maintenance you are happy to take on.