The trouble with attaching hanging baskets to the fence is that as they grow and get heavier with watering it starts to bend. It’s quite a strong trellis but I think it will need replacing in a couple of years.
The wall the fence is attached to is the same old bricks the house is made of with curved coping stones on the top to keep moisture out of the centre of the wall.
Each basket has many different plants crammed in them, then there are a series of smaller baskets with single species in them. There are individual pots balanced on the top of the wall and lots of them on the ground below. Planting up pots requires a balance of compost with crocks (broken pottery) in the bottom of the pots so they have drainage, but then I usually place a saucer or a bowl underneath to catch the water so that it doesn’t dry out. We have a hose pipe so we can water everything regularly.