This spring’s bloom was the best in a long time. Cut out any infested twigs and branches below the borer holes and discard them in the trash. rhododendron. The cells which allow the hydration of the plants leaves are on the underside of the leaf. Rhododendron drainage is poor: solution: lift plant and improve soil structure or move to better drained spot. 3. My soil is quite sandy and drains well so when I planted I mixed up a bunch of compost with some top soil. All of a sudden it became wilted looking, the leaves rounded out and it looked ill. We had some major rains, and it seemed to perk up some. Yellow rhododendron leaves. Now the leaves are turning a rust color, curling upward, and falling off. Rhododendrons are a beauty in the yard with their bright bold clusters of flowers in the spring. The latter is … I’ve just taken a photo of my PJM rhodo because I’ve never seen the leaves this red. It seems to be happening in sections of the plant. Sometimes you notice a few dead branches, yellow or dried out leaves and wonder if the rhododendron … Author: Erik Tallak Nilsen Created Date: 9/8/2006 11:04:03 AM Burned tips on this year's new growth is typically indicative of lack of water as the plant withdraws water from the tips of the new foliage first. Rhododendron Insect Problems. Then, as small black, clear-winged moths, they lay eggs on rhododendron leaves, twigs or the rough bark of the main stems. PJM is functionally sterile, so it never sets seeds but instead spends its energy reserves producing flowers. I have three rhododendron plants that were planted last spring when they were 1 or 2 years old. Caterpillars are approximately 1 inch long. Rusty tussock moth caterpillars on rhododendron. The shrub gets through the winter quite well and comes back every year; it also handles replanting very well. The former is a naturally occurring phenomenon that takes place as the result of changing weather patterns and doesn't necessarily indicate a dead plant. If you see your rhododendron leaves turning yellow, review each and every element of the plant’s care. If you see yellowing leaves and soft and limp plant, this could be one of the signs of overwatering. Symptoms of Desiccation Most rhododendron leaves droop and curl when they freeze, usually at 27° or 28°F. Rhododendron Leaf Problems. However these, and several others, need acid soil to thrive. Rhododendron diseases. First, take a look at how well your soil drains. Suddenly this fall, some of the leaves began curling up. 4. Leaf curl on Rhododendrons is most frequently seen when the plants are under stress from drought, stem injury or cold temperatures. The leaves turn dark purple in the winter. When brown leaves show up in a rhododendron, it's usually at winter's end -- … Rhodies are picky about the soil you plant them in and about how much water they like. glossy green leaves and bountiful blooms. The shrub's colorful blossoms are meant to be viewed against a lustrous backdrop of green. Fig. Title: Why do Rhododendron Leaves Curl? Rhododendron are often planted in afternoon shade so hot summer sun won’t burn the leaves. There are at least four different clones sold as 'PJM', though they're hard (impossible) to tell apart. The easiest style of pruning is trimming off any dead or dying parts of your rhododendron with pruning shears. The evergreens curl their leaves … ... (these PJM leaves are rolled so tight, they look like green beans) Rhodies curl their leaves under as a protective measure against the dry, cold, air. Yellow rhododendron leaves often represent the plant’s expression of dissatisfaction with its care. 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