Fan, diamond, and rectangle shapes are combined in these systems. The fan in the base area supports the branching of the plant and can, if necessary, conceal the lower area later. Because aesthetic concerns-- as with fan forms (6000) -- do not apply, such combination forms fit on almost every wall. With a little support, they offer considerable rope 'density'... are therefore inexpensive and suitable for many plants, except for strong twiners like wisteria. Supportive details can be found in our climbing plants and planning sections (also consult the charts at the bottom of each plant profile).