Category: Ailments

WASPS: An Orchid Fly

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A small wasp inserts eggs into plant tissue which may kill the plant; no control given; refer to AH86-57 Read More

FLOWERS, CRIPPLED: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Some of the older yellow hybrids were notorious for producing cripples; flowers were deformed and sometimes twisted and thickened. A73-906; not all blooms or every year.OWD Read More

FUSARIUM WILT: Shiny Brown Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago On cymbidiums and cattleya seedlings and others; it can also appear as a white mat over fir bark and the roots, and prevents absorption of nutrients. Fitch: All about orchids (1981)-217 Read More

FLOWERS: Deformity

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Check the potassium (K) level of the fertilizer, especially if it is a seaweed extract dilution; or the use of a mixture containing auxins, cytokinins or giberellins. AU84-204 Read More

PENTAC: A Wettable Powder Form

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago One of the safest pesticides, it may be mixed with one part Kelthane to two parts Pentac; effective particularly on mites. A82-352 Read More

PESTICIDES: Regular Use

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A regular programme of applying pesticides is not beneficial to the plants, except in moderation. A78-112 Read More

COLOR BREAK: From the Jungle

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Aphid-transmitted virus has been observed in cattleyas imported from tropical America. OIE86Sept-16 Read More

VIRUS: Persistence

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago When plant parts decay virus is disseminated into the environment; destroy the plant. OA84-112 Read More

FREEZING: Damage to Different Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago At 28 deg.F. leaf burn occurred to odontoglossum hybrids, including odontiodas; completely uninjured were widely-grown species hybrids (27 named) and paphiopedilums (15 named) and cymbidiums. A63-15 Read More

FREEZING: Protection with Sheets

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plants outdoors in Florida can be covered overnight with cloth; if plastic is used keep it above the leaf tissue and remove it before the sun hits it in the morning or plants will be damaged or kil... Read More