Most of the DIY vertical garden ideas we’ve compiled here are as inexpensive as they are nice to look at. By planting upwards instead of outwards, you’ll be equipped with enough space to plant fresh herbs, healing plants, tons of different types of flowers, inside or outside. We understand if the idea of making your own DIY green wall might seem a little intimidating. So here’s a comprehensive guide on how to build a vertical garden, as well as a list of garden wall ideas for inspiration.