· There are many common issues that can impact the way your rhododendrons look. In this article, gardening expert Jill Drago shares the most common problems that may plague your Rhododendrons, and what to do about each issue. One potential Rhododendron problem is that the leaves are turning yellow. Epsom Salts* According to the American Rhododendron Society, if the plant has older leaves that have turned yellow between green veins, you likely have a Magnesium deficiency. Sprinkle some Epsom Salts*around the plant to correct the issue. Iron Sulfate* If the same symptom a...See full list on fromhousetohome.comA second type of Rhododendron issue is brown spots on the leaves. There are several types of fungus that can cause this. With the humid summers here in SC, I always seem to have at least one Rhododendron with this problem. To fix it, I usually clean up around the plant and try to cut back a few branches to reduce overcrowding and improve the air ci...See full list on fromhousetohome.comEvery once in a while I have a whole stem of a Rhododendron branch that dies in the middle of an otherwise healthy-looking plant. According to the Clemson University Cooperative Extension, this is caused by another kind of fungus that gets under the bark. It usually attacks plants that are under stress due to drought, too much sun or late frosts. S...See full list on fromhousetohome.comIf you have evergreen rhododendrons and live in an area where it gets cold in the winter, you may see the leaves curl up and look pretty unhappy during a cold spell. Don’t be alarmed. The leaves are just trying to conserve water in the cold, dry air. They will open up and come back to life once it warms up. If you see curled up leaves in the summer...See full list on fromhousetohome.comThere is nothing more disappointing than seeing your Rhododendron covered in buds and then not getting any flowers! These are the 2 common causes of this that I’ve seen.See full list on fromhousetohome.comLichens are a combination of algae and fungus forming a partnership to help each other grow. Generally, they don’t actually hurt the plant that they are living on, since they make their own food. However, if your Rhododendrons have lichens growing on them, it usually means they are thinning because of poor growing conditions, disease or old age. So...See full list on fromhousetohome.comIf you want even more information about Rhododendron pests and problems, this guide from Washington State University has an extensive list of Rhododendronproblems and how to fix them. You can get it for free online, or buy a printed copy.See full list on fromhousetohome.comMay 1, 2025 · In this guide, I’ll share my personal experiences with recognizing and treating the most common diseases that can affect rhododendrons, along with tips on how to prevent these problems before they take hold. · Rhododendron pests and disease harm plants that are stressed due to environmental conditions or injury. Common problems of rhododendron bushes can be avoided by providing the best growing environment possible and maintaining a consistent pruning, mulching, and fertilizing program. · While rhododendrons are relatively low maintenance once established, they do have particular growing requirements This article will examine 9 common reasons rhododendrons fail to thrive, and provide tips to revive struggling specimens · Rhododendrons can suffer from powdery mildew and bud blast. Learn how to identify and manage these common issues. When rhododendrons and azaleas are properly planted and maintained, insects and diseases are less of a problem. Usually, when problems do occur, they can be traced back to the plant's environment. Two diseases, branch die-back and Phytophthora root rot in particular, are opportunistic this way. · In this guide, I’ll share my personal experiences with recognizing and treating the most common diseases that can affect rhododendrons, along with tips on how to prevent these problems before they take hold. · While rhododendrons are relatively low maintenance once established, they do have particular growing requirements This article will examine 9 common reasons rhododendrons fail to thrive, and provide tips to revive struggling specimens · Rhododendrons can suffer from powdery mildew and bud blast. Learn how to identify and manage these common issues. When rhododendrons and azaleas are properly planted and maintained, insects and diseases are less of a problem. Usually, when problems do occur, they can be traced back to the plant's environment. Two diseases, branch die-back and Phytophthora root rot in particular, are opportunistic this way. · Rhododendron pests and disease harm plants that are stressed due to environmental conditions or injury. Common problems of rhododendron bushes can be avoided by providing the best growing environment possible and maintaining a consistent pruning, mulching, and fertilizing program.
