Pruning Alpine Current


We live in Scarborough and have an alpine current hedge in a almost totally shaded area. Clay soil. It looks like it has gotten out of hand as in many places the main branches grow vertical for 6-12 inches and then horizontal for 3 or more feet. I think I should prune off these horizontal branches- it will mean a drastic diminuation but I think it Is the only way to get small bushes again.
Am I correct, and do I need to wait until late winter/early spring? Thank You


Rejuvenation is a method of pruning old shrubs that have become too large. This type of pruning is carried out over a 2-3 year period  making sure to remove only 1/3 of the old growth each year. First cut away all dead, diseased and intersectiong branches. Alpine currant  (Ribes alpinum ) is a dense shrub  so make sure to remove its interior bulk to allow light into the center of the shrub. The best time to prune is in late winter or early spring just before new growth begins.

When pruning always remember to use clean, sharp tools to reduce damage.