Is wood the best material for raised beds?
Yes! Wood is by far the best option for making raised garden beds, in most cases it's easy to obtain, comes pre-treated and offers good value for money. The best wood for building depends on your preference, however, the most common varieties for building raised beds, planters and even garden edging is pine or oak (oak is generally much more expensive).
There are a few other materials worth considering. Metal raised bed kits (made from galvanised steel) are fairly simple to put together using bolts with prices starting from around £450. Plastic raised bed kits are another cheap option for low-level planting areas but these are usual not very durable.