Q.Clematis
I’m reading your article about pruning Clematis. Can you please tell me which pruning category apply to my Clematis – Jackmanii?
Baltyk
Thanks!

Jackmanii's usuall bloom in the summer on new wood, therefore you prune them after they finish blooming, in the late fall, early winter, or late winter. Never in the spring or when new growth is occurring if you want flowers.
https://www.gardeningknowhow.com/ornamental/vines/clematis/pruning-clematis-vines.htm