This section is about vertically orientated climbing plant systems, with up to 2-4 vertical wires-- often connected with short horizontal wire rope bridges. These forms can be individully placed between windows or as a group on large surfaces. Two systems for framing doors or similar elements are also included. These systems are ideal for many climbing plants, with the exception of vigorous twiners, like wisteria. With clematis and annuals, keep the mesh size under 30 cm for an optimal surface coverage. More details under climbing plants and planning.