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Diseases and pests of rhododendrons; Images of diseases and pests of rhododendrons This page was last edited on 20 March 2022, at 16:40 (UTC). Text is available ...
1 Fungal diseases. 2 Nematodes, parasitic. 3 References. Toggle the table of contents. ... This article is a list of diseases of azalea (Rhododendron spp.). Fungal ...
Rhododendron periclymenoides has low levels of toxicity, and all parts of the plant may cause vomiting or diarrhoea if ingested in quantity. [6] The poisons produced by rhododendrons are known as grayanotoxins, which are a class of neurotoxins. These neurotoxins work by blocking the inactivation of sodium channel receptors, causing cell ...
Rhododendron borers and various weevils are major pests of rhododendrons, and many caterpillars will preferentially devour them. Rhododendron species are used as food plants by the larvae ( caterpillars ) of some butterflies and moths ; see List of Lepidoptera that feed on rhododendrons.
Why Your Rhododendron's Leaves Are Rolling Up and Wilting (And What to Do About It) April 23, 2021 at 12:03 PM. Droopy or curled up foliage on this shrub is a sure sign your plant isn't happy ...
Caused by the Ovulinia azaleae fungus, the disease develops during periods of moist weather at flowering time. Early- and late-flowering cultivars or species tend to escape the disease. The fungus overwinters as sclerotia on diseased petals adhering to plants, on the soil surface, or in leaf mulch under the bushes. [4]
In addition to various Rhododendron species, mad honey can also be made from several other grayanotoxin-containing plants. Honey produced from the nectar of Andromeda polifolia contains high enough levels of grayanotoxin to cause full body paralysis and potentially fatal breathing difficulties due to diaphragm paralysis.
Bees are deliberately fed on Azalea/Rhododendron nectar in some parts of Turkey, producing a mind-altering, potentially medicinal, and occasionally lethal honey known as "mad honey". [11] Azalea is dangerous to pets, as, if consumed, the toxins within the plant tissue can cause central nervous system depression , which in turn can lead to multi ...