Category: Orchid Doctor

CATTLEYAS: Seedlings Received with Stems Black or with Brown Streaks

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For details of treatment refer to A73-326; spray heavily with Truban 1 tpg.; not a virus disease. A73-991 Read More

CATTLEYAS: Tetraploids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Can be identified by the thick succulence of their leaves and their sharp edges. ODA78(1)23 Read More

CATTLEYAS: Two-month Old Sheaths Do Not Produce

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not abnormal, some species mature their growths months before flowering; growers can make use of lights to extend "length of day" to slow flowering time after sheaths are made up; 75 to 95 da... Read More

CATTLEYAS: Unifoliate Sometimes Grown Bifoliate and Even Trifoliate

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Depends on culture and environment; better conditions stimulate bifoliate leads; wrong temperatures and long periods of light inhibit flower initiation. A70-916 Read More

CATTLEYAS: Weak Growths in the Winter Because of Lack of Sun

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Do not remove weak growths, they produce photosynthates. A71-609 Read More

CATTLEYAS: Yellow Flowers Show Crippling

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Lineage is more responsible than environment; some yellows vary from year to year, and from stem to stem. A76-1102 Read More

CAULKING COMPOUNDS: For Greenhouse Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Most latex compounds should be safe for the plants. A87-53; they are rated as highly efficient and cheap. RMH Read More

CEDAR WOOD: Aroma From Containers Possibly Affecting Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The aromatic vapors from cedar will not harm plants. A68-237 Read More

CENTIPEDES: Harmful Effects

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They do not harm plants. A76-4 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More