Search results
Results from the WOW.Com Content Network
The orchid family is one of the most important plant families in respect to the ornamental flower industry. In 2005, the potted orchid industry brought in about $144 million in the United States. This makes them the second most valuable potted plant in the nation. From 1996 to 2006 there has been a 206.4% increase in potted orchid prices.
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]
Symptoms of infection include a downward curling of the leaves, leaf tip dieback, stunting, necrosis of growing leaf tips, sunken 'chicken pox-like' spots on leaves (often with a surrounding halo), stem death and yellowing. [7] Since these symptoms are so generic, extreme caution must be taken when introducing new plants to your greenhouse.
Looking for these signs and symptoms can help you identify thrip problems before they get out of hand: Yellow or brown stippling or streaking on plant leaves Plant leaves with a silvery sheen or a ...
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 Changes.
The orchid family is one of the largest flowering plant families in the world. Orchids can be found on every continent except Antarctica, from the steamy jungles of Asia to the dry deserts of ...
It is one of the most common viruses affecting cultivated orchids, perhaps second only to the Cymbidium mosaic virus. [1] It causes spots on leaves and colored streaks on flowers. [ 1 ] If a plant is also infected with the Cymbidium mosaic virus , it can lead to a condition called blossom brown necrotic streak.
Articles relating to the Thrips (order Thysanoptera), minute (mostly 1 mm (0.039 in) long or less), slender insects with fringed wings and unique asymmetrical mouthparts. Different thrips species feed mostly on plants by puncturing and sucking up the contents, although a few are predators. Entomologists have described approximately 6,000 species.