These are the daddy of all barrel planters and the exact ones needed for trees..the wood is app 2" thick which will last for many years and the size of them allows the tree to grow to it's full potential!
https://thecraftybarrelcompany.co.uk/shop/ols/products/giant-400-litre-40-x-36-whisky-barrel-planter-delivery-included
Giant 400 litre 40" x 36" whisky barrel planter, delivery included
Giant 400 litre 40" x 36" oak whisky barrel planter, delivery included..measurements are not exact as each barrel is unique.
£120.00
https://thecraftybarrelcompany.co.uk/shop/ols/products/giant-400-litre-40-x-36-whisky-barrel-planter-delivery-included
