Her work has appeared in "Flourish" and "Her Campus." Height – 10 to 16 feet (3 to 5 meters) Climate – temperate Exposure – part sun. Japanese pieris produces attractive, bell-shaped white or pink flowers that hang in clusters of 6-inch chains in early winter or late spring. Light prune after flowering. Pieris, in general, tend to be somewhat short-lived and when grown in moist soil (not sure if that is the case in your garden) do not age gracefully. Shape the perimeter of the Pieris with loppers on the thick branches and the secateurs on smaller branches as needed. When pruning any evergreen shrub (except old, overgrown shrubs, see below), aim to remove about one-third of older wood in total. Overwintering Pieris Plants. Pieris ‘Forest Flame’ provides a burst of bright red new leaves in spring, which gradually mature to pink, cream and then green. The shrub overgrowing the bench looks like cotoneaster horizontalis and it is very hard to prune this back and keep it looking good. How to Prune Nandinas. Make your cut in the flower stem at least 1/16-inch above the main branch so as not to damage the branch itself. You can prune to limit height, but don't just cut off the top growth. Typically, only trim back branch shoots that spoil the attractive informal symmetry of the plant. They can take a hard prune but a bit at a time is prudent. Depending on the varietal, Pieris can flower with white to hues of pink and deep red blooms. The best place to cut is 1/4 inch (0.5 cm.) An annual pruning keeps Japanese pieris healthy and blooming. Key Pieris japonica facts. answer. Fertilize Japanese pieris with 10-10-10 granulated fertilizer at a rate of 1 pound per 100 square feet. Pieris (Pieris Japonica) is a four-season beauty in the home garden. If Pieris are pruned in summer or autumn, they will forfeit the flowers for the following year, but otherwise suffer no damage. In the third year remove any remaining older stems. from the ground and cut back any side branches below the first cuts. Copyright Leaf Group Ltd. // Leaf Group Lifestyle. Grab a lopper to tackle the lower branches first, cutting them close to the trunk. It has been given the Award of Garden Merit (AGM) by the Royal Horticultural Society. This will invigorate the plant and encourage new growth. I gave them a hard cut back in March to shape and they're slowly growing new shoots but I'm planning on cutting back hard again now to get rid of the dead wood. Deadhead the Japanese pieris during its bloom time, generally February through April, by pruning off each blossom cluster as it fades. In either case, it means no flowers on your shrub! How to Trim a Pieris. Its lightly scented flowers hang in droopy clusters and may be red, white or pink. Make one cut at a time, severing the branch where it is stronger and lower down, so that it blends back in with the shape of the plant. If you are not concerned about flowering, you can also prune it in the fall. They don't usually need pruning, mine is in a large pot and it looks after itself most of the time. Make the cut with a crisp, one-motion clip of the hand pruner blades on the lower reaches of the faded flower cluster. New, copper-red foliage and berry-like fruits follow the blooms. Winston studied political science at the University of California, San Diego. This process, called thinning, stimulates new, better-flowering growth from the base of Japanese pieris. I would not prune a Pieris too hard, late spring as suggested, cut back a bit each year if the plant is too big. Always wear protective gloves when pruning. Mason holds a Bachelors of Arts in economics from the University of Florida. Pieris Japonica produces flowers on its previous season's growth. Overgrown or neglected Japanese pieris respond well to heavy pruning. 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