This will divert the plant’s energy to the main stem and new growth, which will promote stronger blooms.

Do not cut more than 1/2 of the branches full length. Make the cut straight, right above a flowering bud. Cutting away old buds will promote the growth of new, stronger buds which will lead to more robust blooms the next year.

If the center of the branch is brown or gray, the branch is dead.

Leave strong branches that have minimal offshoots and that are capable of growing flowers.

You should rejuvenate prune in the late winter.

Weigela should not be pruned after mid-July. [8] X Research source

If you need to remove a lot of growth, do it gradually over the course of several seasons.

If your shears are breaking or snapping the branches rather than cutting straight through, purchase new ones.