You should prune a flowering plant before it starts to bud out in the Spring. This is the best time to encourage new growth. For shaping, anytime the plant is dormant, has lost its leaves, will work. If you need to do some work during the summer, wait until after the plant has flowered.
I've read to prune after flowering.
To properly prune weigela plants for healthy growth and abundant flowering, prune them in late winter or early spring before new growth begins. Remove dead or damaged branches, as well as any crossing or crowded branches. Cut back one-third of the oldest stems to the base to encourage new growth. Avoid over-pruning, as this can reduce flowering.
How to prune a broom shrub? Lightly trim with shears after flowering.
trim and prune for flowering
Yes, it is recommended to prune gardenias regularly to promote healthy growth and flowering.
To effectively prune Rosa rugosa plants for healthy growth and abundant flowering, prune in early spring before new growth begins. Remove dead or damaged branches, as well as any crossing or crowded branches. Cut back about one-third of the oldest stems to the base to encourage new growth. Trim the remaining stems to shape the plant and promote air circulation. Apply a balanced fertilizer after pruning to support growth and flowering.
You get both flowering plants and non-flowering plants; non-flowering are things like mosses, ferns and liverworts which produce spore, flowering plants produce seeds
There are two types of flowering plants. These two types of flowering plants are the perennials and the annual flowering plants.
Flowering plants require pollinatio non-flowering plants do not.
In Spring after flowering if pruning is necessary.
flowering plants and non-flowering plants
You can ,but why would you? The right time to prune a Forsythia is immediately after flowering.