Whenever you first see them is when you should trime died parts of shrubs.
Specifically, shrubs and trees tend to have pruning schedules that generally divide into after the bloom on old growth and before the bloom on new growth. But it may be done at any time if there is concern over the rule of the d's: damage, death, decay, disease, dying, never been done. The one rule that cannot be broken is the following: It is o.k. to trim before, but not immediately after, a rain event. Cutting into wet wood can lead to canker.
u get scirrors and trim them
How to prune a broom shrub? Lightly trim with shears after flowering.
Trim off the dead parts of the plant. Fertilize lightly and pinch blossoms that are too early.
The best time to trim a potentilla, and any other summer-flowering shrub, is in the spring before the potentilla buds out.
Taking care of a Laura Pendulum shrub is about the same as taking care of any other plant. Make sure the shrub gets plenty of water and sunlight. Trim the shrub regularly to keep it looking clean.
trim
The leaves or pods.
Although, all parts of the shrub are used--berries, bark, leaves, and seeds--it is the oil of the seed that is used most commonly today.
Rosemary leaves and blossoms may be harvested during the second year of growth. Carefully trim the branches in 4 in (10 cm) lengths, leaving at least two thirds of the shrub intact.
All parts of the plant are used, from the seeds to the roots.
Yes, Once the shrubs reach the desired height you trim them to maintain there shape and size. Remember that you are dealing with a slow growing shrub and if you get to aggresive with the trimming it will take some time for the shrub to heal if it can at all. I would trim them twice per year spring and fall and remove no more than 1"- 2" at a time.
Shrubs that do not have blooming flowers need to be trimmed just when the weather is starting to warm up after winter. A person that lives in a climate that does not have snow can trim their shrubs whenever they need it.