Cut out dead, damaged and crossed limbs in early spring. Up to a third of older branches can be removed to improve air circulation. Since ninebark blooms on old wood, shape as needed just after flowering. Plants can be pruned back to the ground every Estimated Reading Time: 7 mins. Thin after the ninebark goes dormant in late fall or early spring. Minor pruning on stray branches or stems can be done after the ninebark is through blooming. If desired, ninebark can be cut back to about 1 inch above the ground every few years.
Ninebark is used as a specimen plant and in shrub borders. Ninebark – Pruning, Winter Care and Fertilizing. This shrub is often used in mass plantings or as a hedge.
The same pruning technique can be used if they are planted as a specimen. For these plants, pruning should be done in the early spring, before they leaf out. Shear or prune the outer branch tips to shape and reduce the size of the plant. If a plant is large and out of control, it can be cut back to near the ground in late winter to rejuvenate, and it will regrow.
Listed as native to eastern North America, it is more common in U.S.D.A. hardiness zones 2 through 7 (northern U.S. and Quebec to Tennessee and northern Alabama). The common ninebark in its ordinary form is a shrub with tall, arching branches that will grow between 6 and 8 feet tall, and 3 to 6 feet wide in normal conditions, although plants can grow as much as 12 feet tall in ideal locations. The stems sprout from the base, giving a fountain-like look if unpruned, and making a dense clump that will.
Dec 15, Cut back long, leggy twigs that stick out from the top, sides and bottom of the ninebark. Use pruning shears to cut twigs 1/4 inch above an exterior bud, or a bud facing the outside of the shrub. The Ninebark is a very versatile and tough shrub which will grow in a variety of site conditions. While adaptable to a wide variety of soils and mositure levels, the Ninebark is most at home along the edges of wetlands or stream banks.
This multi-stemmed shrub produces clusters. If a ninebark shrub is extremely overgrown and the gardener wants to gain control and start fresh, they can cut the ninebark all the way down to the ground. With all your cuts, go in at a degree angle, and cut as close to the surface of the ground or the main connecting branch as you can.