Summer blooming hedges and hedges that do not bloom are pruned in late winter or early spring before new growth appears. ), hardy in USDA zones 6 through 8, require cutting back for size and shape in early to mid spring. With over 25 varieties and 3 convenient heights available, our hedges are perfect for privacy, to create garden rooms, or border plantings. Either way, try to hold off until the season cools down a little and plants are less stressed. When pruning conifer hedges (Thujas, Taxus, etc), do not wait too long between trims. Trim for a minute, then step back and make sure you are following the line of the hedge. It may seem strange, but to keep your hedge healthy, you will want to prune it slightly smaller at the top. Low growing hedges used for parterres, knot gardens or as borders around vegetable beds can be kept neat by trimming twice a year. Your hedging plants can be pruned into arches, doorways, windows, and other unique shapes. In a nut shell, it's not about pruning when it's hot out, it's about pruning in … When to prune. Hand-held hedge pruners are the best way to trim hedges for control, and an electric hedge trimmer also works well. Learn which plants thrive in your Hardiness Zone with our new interactive map! Plan the perfect garden with our interactive tool →, North Carolina State University: Pruning Shrubs, Texas A&M University: Follow Proper Pruning Techniques, Clemson Cooperative Extension: Pruning Shrubs, Arizona Cooperative Extension: Pruning Hedges. It’s important to know just what you are doing, however, as over-trimming, or trimming at the wrong times can be disastrous for the hedges you are working on. But cut beech and hornbeam no later than mid-July if you want to enjoy the persistent winter leaves, as the resulting new growth needs time to get established. Trim diseased, broken and weak branches anytime of the year, including during hot weather. Late spring, early fall,or winter (when the hedges are fully dormant) are the best times for pruning hedges. Lewis holds a Bachelor of Arts in psychology from the University of Maryland Baltimore County. When to prune hedges. You can always trim more, but you can’t undo a careless cut. The same applies if it is too cold, so if when spring comes you are still regularly experiencing sub-zero temperatures, do not trim your hedge: the cuts will take a long time to heal and the cold will weaken thinner branches. Prune these shrubs in late winter or early spring before growth begins. Water the hedges well about two to three days before trimming to get them well-hydrated before they become stressed from pruning. A weather dependent question - Desire to see them bloom aside, late winter or early spring in mild climates, spring after hard frost no longer threatens where winter is more severe. Formal hedges, with neatly clipped and shaped sides, require more frequent pruning through summer, while informal hedges left in their natural shape require only light pruning to remove dead wood and to maintain their height and width. Vigorous shoots that outgrow their companions can be clipped, but that is it. Trimming & Maintenance. Formal hedges, with neatly clipped and shaped sides, require more frequent pruning through summer, while informal hedges left in their natural shape require only light pruning to remove dead wood and to maintain their height and width. Often used to mark property boundaries, or simply to fence out special portions of the garden, a hedge usually requires little care: at most, trimming once or twice a year. For spring blooming hedges, be careful not to inadvertently cut off this year's branches, which will bloom next year. In a nut shell, it's not about pruning when it's hot out, it's about pruning in … Hedge maintenance is a simple process that can be easily integrated into a landscape routine. Conifers that will take pruning into old wood are: Cryptomeria japonica (Japanese Red Cedar) Taxus baccata (yew). Hedges grown only for their foliage aren't usually as picky about pruning time. Damp weather encourages the growth of microbes that will make the most of the damage your pruning does. Pruning should be done a couple times of year, and trimming only as needed, once or twice a year, or never if possible. Do not prune deciduous shrubs in late summer. Don’t prune hedges during very hot, dry weather, and prune well before your first frost date. Evergreen hedges, such as boxwood (Buxus spp. ), Regular light summer pruning is also necessary to prevent overgrown branches or to control rapid summer growth. Make sure whichever tool you use is as sharp as possible to avoid unnecessary damage and stress to the hedge. Prune in the evening so the hedge will not be immediately exposed to the hottest part of the day. To encourage height increase, simply prune the sides and allow the top of the hedge to grow freely. Trimming hedges, the right time When should a hedge be trimmed, what is the right timing, and how should one go about it best? This includes Leylandii hedges as well as Laurel, Portugal Laurel, Box, ... to recover and put on a bit of re-growth before the winter but try to avoid trimming your hedge during periods of very hot or dry weather. If you missed these windows or if some branches just need to go, the hedges can be trimmed in the heat. Hedges maintained formally (tight shapes) require more pruning than hedges maintained informally (in their natural form) Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Comments Mountain-laurel (Kalmia) 2 Nandina 1,4 Pruning shrubs in August or early September may encourage a late flush of growth.