Spirea
The best time to trim bushes in Minnesota typically depends on the type of bush. For most deciduous shrubs, late winter or early spring, before new growth begins, is ideal for pruning. However, spring-blooming shrubs should be pruned right after they finish flowering. Always consider the specific needs of each plant species to ensure healthy growth.
It is generally not recommended to trim shrubs and bushes in August, as it is a time when plants are actively growing and preparing for the cooler months. Trimming during this time can stimulate new growth that may not have enough time to harden off before winter, making the plants more susceptible to frost damage. It is best to wait until the plant is dormant in late fall or early spring to prune.
The usual answer is immediately after they have flowered. If you prune them more than once a year they are called a hedge.
the best place to by new shrubs is at the home and garden center in your local walmart i buy mine there all of the time and they are the best shrubs i have ever owned
The best time to cut back bushes and shrubs in Indiana is generally late winter to early spring, before new growth begins, typically around late February to early March. This timing helps minimize stress on the plants and allows for healthy regrowth. However, specific pruning times can vary depending on the type of shrub, so it's important to consider the particular needs of each species. Avoid pruning during fall, as this can stimulate new growth that may be damaged by winter temperatures.
Trees and shrubs can be lightly pruned anytime in Florida. To minimize reduction of next year's flowers, prune spring-flowering plants such as azaleas, in late spring before the flower buds set for the next season.
Cedar shrubs grow best in acidic type soils. Because of this one might find it difficult to grow other plants around cedar shrubs. It is also important to note that smaller newer cedar shrubs will take less time to establish then larger ones.
zebra
usually in trees or bushes
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.
pine dwarf shrubs
This is a very comprehensive answer from NC State University: http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/shrubs/text/pruning.html