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Black rot on orchids is caused by Pythium and Phytophthora species. [1] Black rot targets a variety of orchids but Cattleya orchids are especially susceptible. [1] Pythium ultimum and Phytophthora cactorum are known to cause black rot in orchids. [1] Pythium ultimum is a pathogen that causes damping-off and root rot on plants. [2]
Stethopachys formosa, the orchid beetle or dendrobium beetle, is an Australian insect found in northern New South Wales, Northern Territory and Queensland. [2] They cannot survive in colder climates, and they do not appear in Southern states. [3] This insect feeds on the flowers and leaves of orchids, often causing damage to cultivated plants. [4]
Why Orchid Blooms Fall Off Too Soon. Orchid blooms drop off eventually from natural causes, of course, but if the flowers are falling off prematurely, there may be a problem. 1. Sudden Temperature ...
Tobacco mosaic virus—orchid strain Odontoglossum ringspot virus ( ORSV ) is a plant pathogenic virus that belongs to the family Virgaviridae . It is one of the most common viruses affecting cultivated orchids , perhaps second only to the Cymbidium mosaic virus . [ 1 ]
Learn about 10 orchid flower colors, including blue, red, brown, and black, the types of orchids that produce them, and what they mean.
Dactylorhiza maculata, known as the heath spotted-orchid [2] or moorland spotted orchid, is an herbaceous perennial plant of the family Orchidaceae. It is widespread in mountainous regions across much of Europe from Portugal and Iceland east to Russia. It is also found in Algeria, Morocco, and western Siberia. [1] [3]
Dipodium roseum is a leafless, tuberous, perennial, mycoheterotrophic herb.Between fifteen and fifty pale pink flowers with small dark red spots and 20–30 mm (0.8–1 in) wide are borne on a green to dark reddish black flowering stem 40–100 cm (20–40 in) tall.
Caladenia melanema, commonly known as the ballerina orchid, [2] is a species of orchid endemic to the south-west of Western Australia.It is a rare orchid with a single erect, hairy leaf and one or two cream-coloured to pale yellow flowers with red markings and black tips on the sepals and petals.
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