Raised Garden Beds: Why They Work and How to Build One

Raised beds are one of the best investments you can make in your garden. Better drainage, better soil, better yields — here's everything you need.

Raised beds are the single best upgrade for most home vegetable gardens. They give you complete control over your soil, drain better than in-ground beds, warm up faster in spring, and require far less weeding.

Why Raised Beds Work

Better soil: You fill with a custom mix — not whatever clay or sand your garden happens to have.

Improved drainage: Raised beds never become waterlogged.

Fewer weeds: A clean start with weed-free compost, and the height makes hand-weeding easy.

Warmer soil: Raised beds warm up several weeks earlier than ground soil, extending your growing season.

Less compaction: You never walk on the growing area.

Sizing

Ideal width: 1.2 metres (you can reach the centre from either side without stepping in). Length can be anything. Height: 20–30 cm minimum; 40–60 cm for root vegetables or if you want to avoid bending.

Materials

Untreated hardwood (oak, cedar) — durable, attractive, safe

Scaffolding boards — affordable, readily available

Avoid treated timber — some preservatives leach into soil

Filling the Bed

A good basic mix:

60% topsoil

30% compost

10% horticultural grit or perlite

Add a layer of cardboard at the bottom to suppress weeds before filling.

What to Grow

Almost any vegetable does well in raised beds. Particularly good: salad crops, carrots (in deep beds), courgettes, tomatoes, and herbs.

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