Category: Orchid Doctor

CYMBIDIUMS: Short Stemmed

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago May be caused by genetics, some never grow long stems; length can also be controlled by light and night temperature, the warmer the longer. OD67-54 Read More

CYMBIDIUMS: Sizes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A "miniature" in Japan is usually about two feet from bottom of pot to the top of the plant1s spike; "intermediate" there means 3 to 4 feet; standards are the biggest; in the U.S. sizes are for the... Read More

CYMBIDIUMS: Soft Pseudobulbs Ooze a Bad-smelling Liquid

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Possibly Erwinia carotovora, bacterial bulb rot; remove all infected bulbs; spray or drench with Agrimycin. A70-1018 Read More

CYMBIDIUMS: Space Between Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A simple rule evolved over time states one full space between two plants; plants too close together have always been the commonest form of cultural suicide. AU79-37 Read More

CYMBIDIUMS: Species' Flowering Times in the U.s.

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cym. eburneum, Feb.-May; Cym. erythrostylum, Sept.-Nov.; Cym. finlaysonianum, April-Sept.; Cym. giganteum, Nov.; Cym. grandiflorum, Feb.; Cym. lowianum, April-June; Cym. pumilum, April-June; Cym. s... Read More

CYMBIDIUMS: Specimen Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use plastic tubs to reduce weight, also polystyrene as crock; not too deep a pot as compost can get wet and sour; watch for new bulbs piling on old ones in centre; remove old bulbs in centre judici... 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: Spots and Bumps on Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by aphids, red spider or insecticide sprays. OD67-105 Read More

CYMBIDIUMS: Spotting in Cut Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It's related to four causes: disease, insects or pests, physiological spotting, or, mechanical spotting; for much detail refer to OA80-140 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