The 3000 Category contains T-shaped growing systems. The plants are thus drawn up and then guided horizontally on both sides over windows and doors. The vertical area of the growth area serves every now and then only for the guidance of the trunk which often remains unleafy - then only one cable is used for this. Roses, Grapevines and Clematis love several parallel lines. Strong lurching from side to side plants like Wisteria rather like 1 cable systems to prevent entanglement. Some plants, particularly lurching types, only get with an increased effort, in the horizontal position, then t-systems are only conditionally suitable. Learn more at the climbing plants and planning section.