Transplant the rhododendron if necessary. Using the proper techniques for transplanting rhododendrons will help ensure the health and vibrancy of rhododendron plants for many years to come. Thanks, L. Balog. There are over 800 species of rhododendrons ranging from spreading groundcovers a few inches high to 100 foot tall trees and many thousands of registered, named varieties. 2. In moderate climates, rhododendrons can be moved any time of year except during hot spells and right after flowering. Hardy from U.S. Department of Agriculture plant hardiness zone 4 through 9, depending on their variety, rhododendrons may outgrow their spot or need a change of location for other reasons. Jolene Hansen is a lifelong gardening enthusiast and former horticulture professional. Decayed leaves, pine needles or fine pine mulch increase soil's aeration and organic matter. Soil pH near 5.5 is ideal for rhododendrons. Keep the root balls moist; they won't draw moisture from surrounding soil until new roots grow. In warm climates, soaring summer temperatures test rhododendrons. Provide your shrubs with protection from afternoon sunlight and drying winter winds, especially if you have early-flowering varieties. Step 2 Cut back on high-nitrogen fertilizer because too much causes shoot growth, not bloom. October 31, 2015. In many cases, both rhododendrons and azaleas are best left as-is when it comes to their over-all shape. They are good plants but I just want to show them off. Then get the shrub into its new spot right away. The U.S. Supreme Court: Who Are the Nine Justices on the Bench Today? In a cold climate, early spring would be the best time to transplant. TGH. Here are a few hints to help you grow rhododendron and their close cousin, the azalea. Step 3 - Prepare Root Balls. Welcome to The Garden Helper! Transplanting Native Azaleas and Their Propagation by Root Cuttings Fred C. Galle, Pine Mountain, GA For more than twenty-five years, in developing Callaway Gardens, we have collected many thousand native azaleas, both from our own properties and from land which was being cleared for development, in the general area and even some outside the state. If one of your plants does need a little shaping, early spring or late winter near the end of the dormant season is the best time to shape it, depending upon your region. Soft new growth forms right under spent rhododendron flowers. How to Transplant Rhododendrons. Check the soil moisture manually, and water the soil as needed to keep the root balls damp. Everything you need to know about choosing the right rhododendron for you. CEO Compensation and America's Growing Economic Divide. Guide to safely moving and transplanting Rhododendrons, Roses and other large plants. Azaleas (Rhododendron spp. Read on if you are interested in learning how to transplant azalea bushes. In cold climates early spring … That distance allows air circulation and room for maintenance. They prefer damp climates and mild temperatures, but there are rhododendron plants and azalea bushes suitable for Zones 4-9. If a shrub must be transported by vehicle to another location, then the cloth or tarp can protect the entire plant -- from roots to leaves. We aim to enrich everyone’s life through plants, and … In moderate climates, rhododendrons can be moved any time of year except during hot spells and right after flowering. Follow these tips to ensure successful transplanting of your rhododendrons. The best time to transplant a rhododendron is when the plant is not in soft growth. Some friends of mine just bought an old house with a huge rhododendron up against the house. It is a large genus with over 800 species. Mulch conserves soil moisture, protects shallow roots and keeps soil temperatures steady. Slide the plant onto a tarp to assist in moving it. 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