As dotty says, they do take pruning pretty well. For best results, it should be done in the fall or in early spring before new growth begins. Prune a large rhododendron that is old and has multiple stems coming up from the ground back to its stumps, with no leaves remaining. You should do this if you want your rhododendron to grow larger or taller. Swansons Nursery, 9701 15th Ave NW, Seattle, WA, 98117, United States 206-782-2543 garden@swansonsnursery.com Swansons Hours: On-site shopping by reservation only. Rhododendrons & Severe Pruning. have an attractive, natural shape that may lead you to believe they don't need regular pruning. Prepare an indoor area for starting seeds. The how to prune and when to prune are more important than how much to prune, when it comes to Rhododendron Plants. There are a number of things home gardeners can do to keep rhodies and azaleas long-lived and healthy, according to Jan McNeilan, retired horticulturist with Oregon State University Extension Service. The roots are cut back (pruned) with a sharp shovel, leaving a wide but shallow pad of roots and soil. Rhododendrons are extremely resilient plants, and your rhododendron will survive and grow back, but don’t … Order pick-up available from 9am-6pm daily. Talk to us. You can prune in early spring or late winter to discourage your plant from producing as many flowers, and encourage it to put its energy into growing new branches and leaves. This is a sizeable but relatively simple job. Other pruning I did was to pinch out new growth (after they bloomed) where I didn't want them advancing (like into the turnaround parking area). Pruning … Prune before the blooming season to reduce the number of flowers. Pruning Rhododendrons Rhododendrons can be pruned as much or as little as you like. February: Start seeds of annuals indoors for transplanting in spring. Sometimes large, long-established rhododendrons have to be moved. The first year, cut 1/3 of the rhodie way down. And spring is a good time to give these beautiful shrubs the care they deserve. You can tell us about news and ask us about our journalism by emailing newstips@heraldnet.com or by calling 425-339-3428.; If you have an … It is too early to prune hardy fuchsia, tender plants like escallonia, lavender and jasmine, and keep your clippers away from spring blooming rhodies, azaleas and camellias. When to Prune Rhododendrons Generally you will want to prune rhododendrons right after the plant is through flowering. I agree with Paul, the best timing for a severe pruning is just as flowering finishes. Winter rhodies and pruning conifers Originally published January 17, 2013 at 5:30 am Updated January 17, 2013 at 7:31 am Rhododendron ‘Christmas Cheer’ is a variety that blooms in winter. Light pruning and shaping should be done every year at the time you remove the old flowers. AURORA - Rhododendrons and azaleas herald spring in Oregon. I have cut rhodies almost to leafless stumps at that time, cutting above a plump dormant bud on each limb. I've read that if you really want to downsize them, to do it 1/3 at a time. January: Order seeds for starting indoors in a few weeks or outdoors in a few months. Most pruning of large flowered Rhodys should be done in the early spring at blooming time. Rhododendrons (Rhododendron spp.) Pruning to facilitate moving. They grew nicely, and with a little new growth pinching ended up as compact, full plants in 2-3 years. Spring at blooming time sharp shovel, leaving a wide but shallow pad roots. Outdoors in a few months downsize them, to do it 1/3 at a time, cut 1/3 of rhodie. To be moved says, they do n't need regular pruning pruning pretty well roots are cut back pruned. 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