After many years shrubs and trees deplete the naturally occurring calcium in the soil and it must be replaced. But, amongst them was one plant, the PJM rhododendron that was unfazed by the assault of the out-of-season, 17 degree Fahrenheit weather. If the chainsaw in your garage is calling your name, resist. Lace bug damage on leaves causes a greyish, or whitish leaf upper surface with a discolouring on the lower surface. There are two different species of these sap-sucking insects, one which attacks rhododendrons and the other azaleas. The … It is reportedly a chemically induced tetraploid of R. ‘Weston’s Aglo’. If an established rhododendron loses vigor after several years and there are no obvious insect or disease problems, it may be suffering from a lack of calcium. Rhododendrons are shrubs with showy flowers in spring, usually in shade of white, pink, purple and red. Root & Crown Rot. Flowers bloom in April. How should we manage this? The PJM Rhododendron is a small, evergreen shrub that is covered with blooms in the spring, and is the only member of the Rhododendron family that is NOT a deer favorite. Some types of rhododendrons that lose their leaves in winter are commonly called azaleas. It is a broadleaf evergreen shrub that typically grows to 3’ tall and as wide. Get inspired by Robin Sweetser’s backyard gardening tips and tricks.

The fungus Phytophthora species causes one of the most common disease problems in the landscape for rhododendron and azalea. The best way to do this is to spread lime on the soil. The foliage of elliptic, glossy, dark green leaves turns reddish-purple in fall and winter. Updated: April 6, 2020 by Wanda Simone Learn the common types of Rhododendron problems that may cause your normally care-free plant to be unhealthy and how to fix them. There are dead parts in the middle of all of the plants. ‘Bubblegum’ is a PJM-type Rhododendron that is noted for its single pink flowers, small leaves and red stems. Rhododendron With Yellowing Leaves. Should be sited in areas protected from strong winter winds.

PJM rhododendron are best grown in an acidic, moist, well-drained soil in part to full shade. Rhododendrons are fibrous, shallow rooted plants that need good drainage to perform well. Informational … Rhododendrons (including deciduous azaleas) may be attacked by several diseases, causing unsightly foliage or a lack of flowers. The "rhododendron tonic" is a good formulation for rhododendron and azalea problems indicated by chlorosis. Rhododendron and usually elliptic, leathery and dark green. One of my other favorite things about this shrub is the scent of the foliage-- kind of like black pepper and candy mixed together. PJM rhododendron is the easiest to grow of all the rhododendrons, doing well throughout most of the eastern states.

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