Some grow up to 30 feet long so you will need a clever extension plan for those.
Chicken wire trellis for clematis.
I believe horizontal wires spaced at 30cms 12 could be advantageous for the clematis and simple to handle.
This clematis trellis is mounted away from the wall to allow room for growth and air circulation.
Flexible wire mesh such as chicken wire works well.
First year clematis vines should be given a training trellis.
Unroll chicken wire to a length of at least 5 feet and flatten it slightly before attaching it to the fence posts.
If space permits unroll the full length of wire netting you will be using cut it.
Trellises for clematis supplies needed 2 eight foot long sturdy sticks plastic covered aluminum stakes available at garden centers everywhere and in garden centers in many big box retail stores 22 or 20 gauge steel galvanized wire a hammer wire cutters a yard stick or ruler a step ladder if needed.
Constructing a rooster wire additionally referred to as poultry netting fence to let vines climb provides new house to your backyard.
Concrete reinforcing wire sometimes called re mesh is rigid and heavy but it makes a great trellis and will last for many years.
If it s flexible you can also mold it around a post or along the top of a fence.
Pick wood or metal trellis that matches the expected height of your vine.