One method is to prune them back over a 3-year period. Begin by removing one-third of the large, old stems at ground level in late winter/early spring (March or early April). The following year (again in March or early April), prune out one-half of the remaining old stems. Also, thin out some of the new growth.

When should you not trim bushes?

After “how?”, the second most-asked question we get about pruning is “when?” (Or, “Can I prune this now?”) The rule of thumb is to prune immediately after bloom for flowering shrubs, in late winter or early spring for non-blooming shrubs (particularly for heavy pruning), and not after mid-August for any shrubs.

How far back can you trim an evergreen bush?

Always make sure that green growth is left on every branch cut to prevent the branch from dying. New growth can be sheared back or thinned close to the dead zone, but you should try not to remove any more than two thirds of new growth. Prune early in the growing season, April or May depending on your growing zone.

What to do with overgrown evergreen shrubs?

Shape an overgrown shrub into a tree form. Select one to five of the most vigorous growing branches and prune out all the remaining branches to ground level. Then remove the lateral branches that are three to four feet off the ground. Also, prune out some of the interior growth for better air circulation.

Can you trim evergreen bushes in the summer?

The best time to trim evergreen bushes, whether they are part of informal hedges or specimen plantings, may include pruning in summer if their health is at stake, but otherwise need to be pruned based on when they flower.

Can I prune evergreen shrubs in summer?

Pruning evergreen bushes is best done in late March or early April before new growth begins. Light pruning can also happen in late June or early July. Avoid pruning evergreen shrubs in the fall, since they are more susceptible to winter injury.

How do you shape evergreen shrubs?

To correct the shape, prune before new growth starts in the spring; lightly prune side branches to reduce their size and to bring the plant back into scale. Prune spreading and creeping junipers by selectively cutting back to vigorous, lateral side branches. Do not shear in a formal manner.