How to Prune ground clematis?
In late winter or early spring as buds start growing, cut old stems to the lowest healthy bud pair, about 15–30 cm above the soil. Herbaceous types may be cut near ground level in early spring or late autumn.

ground clematis · Clematis recta
Plant in a moisture-retentive, well-drained soil. Keep the base of the plant and roots cool and shaded by other plants or a layer of pebbles or flat stones at the base. Plant with the crown of the clematis at soil level. Mulch in late winter with garden compost or well-rotted manure, avoiding the immediate crown. Ideal for a border where it can be supported by other plants. See clematis cultivation for more advice
In late winter or early spring as buds start growing, cut old stems to the lowest healthy bud pair, about 15–30 cm above the soil. Herbaceous types may be cut near ground level in early spring or late autumn.