1、 Spring pruning
Three types of Clematis usually bloom late and usually bloom in summer or autumn. The pruning range should be large after spring, because it can resume growth for a long time. At this time, if you do not re cut, the plant will grow too dense, affecting the internal ventilation and light transmission, and the growth will gradually decline. Cut off most branches and keep only 3-7 sections p>
2、 Post flower pruning
This kind of Clematis usually blooms twice a year. If it blooms in spring, it can be trimmed in June. If it is a relatively robust plant, it needs to be re cut after flowering, which can promote the growth of new branches. If it is flowering in summer, the pruning time should be postponed accordingly. In addition, the residual flowers should be removed in time to avoid wasting nutrients p>
3、 After the second round of flower pruning
Clematis usually blooms in the second round in September, and the newly grown branches can be trimmed after flowering. Cut it off at the second section so that it can bloom again. Early flowering varieties are usually pruned in mid August and can continue to open in October p>