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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] Symptoms of this pathogen include stunting and chlorosis. [2]
Phloeophthora cactorum (Lebert & Cohn) G.W. Wilson, (1914) Phytophthora fagi R. Hartig, (1876) Phytophthora omnivora de Bary, (1881) Phytophthora cactorum is a fungal-like plant pathogen belonging to the Oomycota phylum. It is the causal agent of root rot on rhododendron and many other species, as well as leather rot of strawberries.
Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are conducive. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight. A key characteristic of this pathogen is its ability to produce black resting structures known as sclerotia ...
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Maxillaria orchids bloom in early spring. Care Guide. Light: Abundant bright but indirect light, east-facing windows. Water: When soil feels dry to the bottom of the pot, about once a week at most.
Dendrobium loddigesii ( Loddiges' dendrobium) is a miniature to small sized, warm to cold growing epiphyte, lithophyte or terrestrial orchid that comes from Laos, Vietnam, and China. [1] [2] It is found in humid, mossy, mixed and coniferous forests at elevations of 1000 to 1500 meters, in areas with dry winter and a wet spring and summer.
Care Guide. Light: Indirect light facing an east-facing window. Temperature: 70 to 80°F during the day, 60 to 65°F at night. Height: Up to 3 feet. Water: Twice a week whenever the soil becomes ...
E. graminea. Binomial name. Eulophia graminea. Lindl. 1833 [1] Eulophia graminea, the Chinese crown orchid, is a species of orchid native to Asia. It often develops a pseudobulb. It is considered invasive in Florida and spreads with wood chip mulch. [2] Flowers are green and brownish purple. [3]
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