50+ Yellow Leaves On Rhododendron. If rhododendrons are grown in the proper acidic soil or you are growing them in pots, they might still suffer from yellow leaves because of hard tap water if you water then regularly or a lack of sufficient nutrients. There are several reasons that this may happen.
The leaves of most rhododendrons stay green throughout the winter, which may lead to outdoor cats being more. There are several reasons that this may happen. Yellowing of oleander leaves is a common symptom that the plants are too dry.
Drought can cause similar symptoms.
Lyon (1991) insects that feed on trees and shrubs, 2nd ed. There are about 1,000 species. All parts of the rhododendron are toxic and have the potential of causing serious these blossoms come in white, yellow, orange, red, pink or purple. The yellow leaves on your rhododendron reflect normal leaf drop.