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Oct 05, Although it’s easy to focus on how to trim an overgrown shrub, when to prune is equally important. Badly overgrown shrubs respond well to pruning in late winter/early spring, Estimated Reading Time: 2 mins.

Oct 07, Cut Back: Chrysanthemum This vibrant star of fall’s flowering plants can be cut back after they’ve bloomed or been hit by a hard frost. Trim the plant down to about six or eight inches from the soil. Leaving some of the stems can help hold leaves or other mulch that can insulate the plant from harmful freeze-and-thaw stumpcut.barted Reading Time: 5 mins. Apr 26, To encourage the plants to become stockier, cut the plant back by one-third once it has reached about 6 to 8 inches in height.

This will encourage it to send out more stems. Let the plant grow about a month, then cut it back by one-third again. It should grow into a full, stocky plant with multiple stems and blooms. Oct 20, Grumpy's sure-fire, no messing around, always guaranteed correct answer: Gardenia blooms on new growth, so you can prune it now, this winter, or early spring without eliminating the blooms.

Cut it back as far as you need to. The only time you don't want to prune is when it's setting flower buds or you'll cut off all the stumpcut.bar: Steve Bender. The best and only time herbaceous peonies should be cut back is when they wither and start turning yellow at the end of the summer.

This will ensure that your bulbs have enough stored energy for next year’s blooms as well as maximising their potential during any other season this year. Apr 23, The best time for pruning depends upon the plant. Trim early-spring flowering shrubs right after they bloom. Clip summer flowering plants in winter or early spring. Trim nonflowering plants after Estimated Reading Time: 3 mins.