Clematis Arabella belongs to the third group of pruning, so it is pruned in the fall strongly - from all the shoots, small (15–20 cm) penetes remain with 2-3 buds. Wallside and trellises. Three years ago I put in 120 Arabella plants instead of planting any annuals. Clematis 'Arabella' (Clematis 'Arabella') will reach a height of 2.5m and a spread of 1m after 2-5 Years. The free-flowering blooms cover the whole plant (not just the tips) . Single flowers with slightly upturned sepal edges open to violet-blue, then develop mauve-colored centers and fade to soft blue as they age. Its rosy-blue slightly nodding flowers are both abundant and attractive. Clematis ‘Arabella’ at Digging Dog Mail Order Nursery. . Beautiful, color-changing blooms provide a parade of summer color. Suggested uses. Plant against a warm wall in fertile, well-drained soil (especially chalky soils). Cultivation. Pruning group C . Soil type. Chalky, Clay, Loamy, Sandy … Since Arabella is from the Integrifolia Group, there is no problem with wilt. With its non clinging stems, this variety is more of a rambler but will climb with a little help. Arabella Clematis Clematis x 'Arabella' Sku #2178. Celebrated as the most popular nonclimbing Clematis and the longest flowering of all Clematis, this 2002 AGM champion promotes plentiful, rounded bright blue-mauve flowers from spring through fall upon a winsome, semiherbaceous shrubby habit. Arabella is my favorite clematis of the 50 clematis varieties in my zone 4 garden. Arabella excels growing through small shrubs or even as a ground cover.