Looking for some help with my garden design. This is in the middle of an industrial estate to provide a space people can get away from all the concrete and grey. The ground is concrete and will need some levelling but the intention is to build 71m of mostly continuous planters to separate from the concrete.
Planters will be around 90cm high 90cm wide with bushes and small trees.
Im looking for advice for affordable solutions to build the planters from and what type of soil to fill them with?