Answer Save. Why does my rhododendron with yellow or chlorotic leaves: This is a general sign of unhappiness and can have many causes: 1. The ‘Old Cornish Red’, which was planted 120 years ago by a Victorian explorer at South Lodge Hotel in Horsham, West Sussex, is Britain's widest single stemmed rhododendron. Dig down past the roots, at least 6 inches deep. We aim to enrich everyone’s life through plants, and make the UK … 9 Answers. Sometimes large, long-established rhododendrons have to be moved. The Acid Test: Alan Titchmarsh on growing Rhododendrons RHODODENDRONS are in their prime right now. Everything you need to know about choosing the right rhododendron for you. Pay attention to the planting depth. Moving a shrub Gardening Guides from BBC Gardening. In this video, This Old House landscape contractor Roger Cook shows how to successfully move a large rhododendron shrub to a new location. For best results, it should be done in … Name – Rhododendron Family – Ericaceae Type – shrub Potted height – 26 to 32 inches (0.6 to 0.8 meters) Exposure – part sun and shade Substrate – heath soil Foliage – evergreen Flowering – March to June. This is especially true if rhododendrons and other plants have been growing near each other for many years because the roots systems may be growing together. Discover rhododendrons. 1 decade ago. You may not be able to move rhododendrons that are located close to trees or other shrubs. This is a sizeable but relatively simple job. Dig a 5-foot-diameter circle around the rhododendron. This orbiculare was overpowering its neighbors, and nearly blocked a path. Cultivated rhododendrons that have to be cut back to a stump likewise frequently recover. As rhododendrons grow larger, they often become too crowded. Dovefromabove Central Norfolk UK Posts: 64,519 March 2016 I agree - after flowering - but you can start preparing the site where it's going now - a decent sized area with lots of added organic matter dug in, then when you dig it up with a huge rootball and plant it and water it in well it will hardly notice it's been moved. Discover rhododendrons. 2. Rhododendron drainage is poor: solution: lift plant and improve soil structure or move to better drained spot. Get involved. Key Potted Rhododendron facts. If you're planning on redesigning your garden, but want to keep hold of your favourite shrubs, it's possible to transfer the plant to a new site. Rhododendrons are nice shrubs perfectly suited to being grown in pots. When is the best time to move a rhododendron? Favourite answer. Pruning to facilitate moving. Moving a Large Rhododendron Moving a large azalea Moving a 40 year old Chinese Witchhazel. Excavate a 12-inch-deep hole at the new planting site. 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