I was wondering if anyone has ever seen or heard of someone trying to grow plants using vertical wall gardening? I've been trying to find more about it and a lot of what I've seen has been really interesting. Part of my question is "what types of plants can be grown there?".
It looks like a lot of the plants I've seen people use are forbs or herbs but I was wondering if you could do small shrubs or grasses (like a cereal grain?). Does anyone know anything about this subject who could help me understand it better?
If your referring to what i think you are then , any above ground plants that are capable of hydroponics/aquaponics, and if using a wicking system can also grow root crops, i think the easiest way of answering your question is by saying " if you have a system that supports a 4 inch root ball , then any plants that grow with a 4 inch root ball" in essence design a system according to the plants you want to grow
If it's one like in this Video then use hydrotons or something that doesnt decompose, as slumpage will kill the plants...
Companion Planting Guide by World Permaculture Association