Why Raised Beds Are the UK Gardener's Best Friend
Raised bed gardening has exploded in popularity across UK gardens — and it's easy to see why. Whether you're working with poor soil, a small patio, or a back that doesn't appreciate too much bending, raised beds solve a host of common gardening problems. They warm up faster in spring, drain better in wet weather, and give you complete control over your growing medium.
This guide covers everything from choosing and positioning your raised bed to filling it correctly and planting it up for a productive season.
Choosing the Right Raised Bed
Raised beds come in a range of materials, sizes, and depths. Here's how to choose:
Material
- Timber — the most popular choice; looks natural, insulates roots well, and is easy to work with. Opt for untreated hardwood (oak, larch) or FSC-certified timber for longevity
- Metal — galvanised steel beds are increasingly popular; they're durable, modern-looking, and resistant to rot and pests
- Recycled plastic — lightweight, long-lasting, and often made from recycled materials; a good eco-friendly option
- Wicker and willow — attractive but shorter-lived; best for ornamental kitchen gardens
Size
The golden rule: never make a raised bed wider than you can comfortably reach across — typically 1.2 metres (4 feet) for access from both sides, or 60–90cm if against a wall or fence. Length can be whatever suits your space. Standard depths are 15–30cm, though deeper beds (45cm+) are better for root vegetables like carrots and parsnips.
Positioning Your Raised Bed
Most vegetables need at least 6 hours of direct sunlight per day, so choose the sunniest spot available. Avoid positioning beds directly under trees (root competition and shade) or in frost pockets. Ensure you have easy access to a water source.
What to Fill Your Raised Bed With
The filling is where raised beds really shine — you can create the perfect growing medium regardless of what's underneath. A good mix for most vegetables:
- 60% topsoil — use a quality loam-based topsoil
- 30% garden compost or well-rotted manure — adds nutrients and improves structure
- 10% horticultural grit or perlite — improves drainage
For a no-dig approach, layer cardboard on the base (to suppress weeds), then fill with compost. This method is increasingly popular and produces excellent results.
What to Plant in a Raised Bed: A Seasonal Guide
Spring (March–May)
- Lettuce, spinach, and salad leaves — sow direct or transplant
- Peas and broad beans — sow direct
- Onion sets and garlic — plant out now
- Early potatoes — plant in a deep bed or potato bag
- Brassica seedlings (cabbage, kale, broccoli) — transplant from indoor sowings
Early Summer (May–June)
- Courgettes, squash, and cucumbers — plant out after last frost
- French and runner beans — sow direct or transplant
- Tomatoes — plant out in a sheltered, sunny spot
- Sweetcorn — plant in blocks for good pollination
Late Summer and Autumn (July–September)
- Winter salads — sow now for autumn and winter harvests
- Spring cabbages and kale — sow for overwintering
- Garlic — plant in October for next year's harvest
Raised Bed Spacing: Make Every Centimetre Count
In a raised bed, you can plant more densely than in traditional rows because you're not walking between plants. Use the 'square foot gardening' method as a guide — divide your bed into 30cm squares and plant one type of crop per square, adjusting for plant size:
- 1 plant per square: tomatoes, courgettes, cabbages
- 4 plants per square: lettuces, beetroot, Swiss chard
- 9 plants per square: spinach, spring onions, dwarf French beans
- 16 plants per square: radishes, carrots (thinned)
Watering and Feeding Your Raised Bed
Raised beds drain freely, which is great for plant health but means they can dry out faster than in-ground beds. Water regularly, especially during dry spells, and consider installing a simple drip irrigation system for convenience. Feed hungry crops like tomatoes and courgettes with a liquid tomato feed every two weeks once they start flowering.
Crop Rotation in Raised Beds
To prevent the build-up of soil-borne diseases and pests, rotate your crops each year. A simple four-bed rotation works well:
- Brassicas (cabbage, kale, broccoli)
- Roots (carrots, parsnips, beetroot)
- Legumes (peas, beans)
- Potatoes and tomatoes
Get Started with Raised Bed Gardening
Ready to set up your first raised bed? Browse our range of raised beds and watering and irrigation to get everything you need for a productive 2026 growing season.