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Cactodera cacti, also known as the cactus cyst nematode or cactus cyst eelworm, is a plant pathogenic nematode. It is a pest of plants in the families Cactaceae , Apiaceae , and Euphorbiaceae . History
Bipolaris cactivora is an ascomycete, causing cactus stem rot and pitahaya (dragon fruit) rot. Also known as Drechslera cactivora, this fungus has been reported causing fruit rot on Hylocereus undatus (white-fleshed pitahaya). This specific cactus is both used decoratively as well as commercially in production of pitahaya fruit.
Once infected, the cactus develops symptoms which can include (varying with the host infected) reddening of the pads, mosaics, mottles, ringspots or necrosis. The virus has few known family hosts (under 3) and the exact spread of this virus is unknown, but known to be based in the United States.
Tristerix aphyllus parasitizes two species of cactus; Echinopsis chiloensis and Eulychnia acida, and in its adult form shows only its flowers and its fruits, bursting forth spectacularly from the columnar cacti which are its hosts. [3]
Cactoblastis cactorum, the cactus moth, South American cactus moth or nopal moth, is native to Argentina, Paraguay, Uruguay and southern Brazil. It is one of five species in the genus Cactoblastis that inhabit South America , where many parasitoids , predators and pathogens control the expansion of the moths' population.
Signs Of Overwatering. If a Christmas cactus begins to look limp or soggy, there's a good chance it's being overwatered rather than underwatered. Black spots or a bad smell could also indicate ...
Young cactus segments can be roasted to remove spines, then peeled and sliced to be eaten like string beans; alternatively, they can be deep fried. The leafy segments can be peeled and chewed for emergency hydration. [12] Opuntia humifusa has also provided traditional medicine uses in Indian, American, Mexican, and Korean cultures. [13]
Euphorbia tirucalli (commonly known as Indian tree spurge, naked lady, pencil tree, pencil cactus, fire stick, aveloz or milk bush [3]) is a tree native to Africa that grows in semi-arid tropical climates. A hydrocarbon plant, it produces a poisonous latex that can cause temporary blindness. [4]