Category: Cymbidiums

CYMBIDIUMS: Sepal Curl

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Can be caused by spraying with an emulsion concentrate insecticide such as Zectran. C71-199; OA78-195; or, by too much wetting agent. C72-122 Read More

CYMBIDIUMS: Summer Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Do not keep them in a hot enclosed space; they do better in an airy,partially shaded outdoor location. OA79-123; commercial growers do differently in the north and keep their plants in the greenhou... Read More

CYMBIDIUMS: Symptoms of Magnesium Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Causes a yellowing of plants; try adding Epsom salts to the nitrogen-rich fertilizer. OD71-278 Read More

CYMBIDIUMS: Symptoms of Potassium Deficiency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Leaves of older growths tend to turn yellow, starting from the tip and working toward the pseudobulb. OD71-278 Read More

CYMBIDIUMS: Temperature to Set Buds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The low temperature does not matter, it's the swing of about lO dC from day to night, just as the bulb is about to mature that matters. AU84-278 Read More

CYMBIDIUMS: Temperatures Required

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Summers as cool as possible; in fall nights of 50 deg.F.; fall days can run to 70 deg.F, but as winter comes on lower the days to 60 deg.F.; the early flowering types will develop with the shorteni... Read More

CYMBIDIUMS: Spikes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Train them during warmer part of the day; during cold they are brittle and break easily. OA78-170; Use bamboo stakes with twist-ems or string suspended from the roof,or Nie-Co-Rol tension type with... Read More

CYMBIDIUMS: "clawing" of Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Bright morning sunlight after cold nights causes this damage. AU78-143 Read More

CYMBIDIUMS: In High Humidity Areas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If the humidity is too high the roots both die and produce new ones at the same time; new growths can rot away, OA82-5 Read More

CYMBIDIUMS: Deformed Buds and Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Occasionally this is caused by low night temperatures followed by exposure to strong early morning sunlight. AH43 Read More