This spring’s bloom was the best in a long time. Essex, United Kingdom ... Now on one of the plants the leaves are starting to not look good. December 1, 2014. Question From: Napa, California, United States . We just bought our house in April and the rhododendron flowered in spring and was looking beautiful. A hydrangea with brown leaf margins is likely suffering from a cultural problem, disease or pest infestation. Can you help me with my rhododendron? Roots of affected plants appear soggy or blackened, and the outer portion of the root easily pulls away from the inner portion. Asked September 9, 2016, 9:20 PM EDT. Today I noticed that many of the leaves are turning yellow, and a section appears to have died. We have a rhododendron in our front yard. Some varieties prefer a much colder winter than we have and these tend to burn and crisp on the leaves. Does es anyone know what is causing this browning on the edges of my rhododendron leaves? They sometimes contain numerous small, black fruiting bodies of … August 2016. If you see drooping and rolling of foliage during the growing season, it's likely that your rhododendron has a wilt … This is usually a sign of stress. is an attractive deciduous shrub that comes with the added bonus of being shade tolerant and low maintenance. This spring, many have turned completely brown or else the leaves of specific branches have turned brown even though the rest of the shrub looks healthy. I have three rhododendron plants that were planted last spring when they were 1 or 2 years old. Q. Rhododendrons with Brown Leaves. It's their way of protecting themselves from dehydration. You need to do this before the plant starts to suffer as root problems caused by poor drainage can be fatal. Leaves are the best indicators of plant problems. Lace bugs thrive in sunny locations since their natural enemies avoid these locations. We have a rhododendron in our front yard. The plant may be too dry or too hot. Q: One of my rhododendrons has brown on the edge of the leaves, and it seems to be going further into the leaf. any help much appreciated. What is Causing Rhododendron Leaves to Brown and Curl? Rhododendron varieties that are susceptible to damage should be grown in more shaded locations. With their broad leaves and clusters of long-lasting fall and summer-blooming flowers, hydrangea (Hydrangea spp.) Ladybird4 Third rock from the sun Posts: 26,463. Many things can cause rhododendron leaves to turn brown. If your plant is infected, isolate it from your other plants and remove the offending leaves with a pair of scissors that you disinfect between each cut. See the picture and the leaves are browning on the edges. With their broad leaves and clusters of long-lasting fall and summer-blooming flowers, hydrangea (Hydrangea spp.) May 26, 2002. Usually on azaleas, the leaves become very pale, swollen and distorted, then covered in a bloom of white fungus spores; Leaf spots: Purple or brown, more or less round spots appear on the upper leaf surfaces, usually of evergreen species. Most rhododendron sources indicate the lowest temperature range in which rhododendrons can be successfully grown. Hello! Why are my rhododendron leaves turning brown? Leaf spots, leaf blights, and tip burns can all mean leaves turning brown on philodendrons. See the picture and the leaves are browning on the edges. It could be one of several reasons. Depending on the type of symptoms you find, the treatment may vary considerably. Asked September 9, 2016, 9:20 PM EDT. Why are my rhododendron leaves turning brown? Eventually this leads to the death of the plant. Browning rhododendron leaves. Why the sudden appearance of damaged leaves? Asked March 11, 2016, 12:00 PM EST. My rhododendrons have brown edges on the leaves. During the winter, rhododendron leaves often droop and curl in response to cold temperatures. Look for yellow leaves, scorched brown spots, powder or discoloration. I have a rhododendron which was healthy last year, and produced gorgeous white flowers. Rhododendron leaves normally remain green in winter but curl and hang down in very cold weather. But they can addle the gardener's mind with several types of leaf diseases. A. Rhododendrons lavish beauty on Pacific Northwest gardens, with lush bloom continuing this year into late May. What Happened to My Rhododendrons? There's plenty of new green growth, so perhaps it's just a natural part of its lifecycle. Any idea what causes this? Another reason that rhododendrons die is from cold winter temperatures. By Kevin Wilcox – Rhododendrons have had a tough year. Flowering in May its leaves have lovely yellow brown indumentum underneath and the young foliage is a super silvery colour. is an attractive deciduous shrub that comes with the added bonus of being shade tolerant and low maintenance.