Category: Orchid Doctor

CROWN ROT: In Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The cause may be 1, too high nitrogen level during cult ivation of the seedlings; use Electric Conductivity reading of not more than 0.6, with a nitrogen to potassium proportion of 1:1:2. 2, Night ... Read More

CROWN ROT: In Phalaenopsis Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A preventive is Benlate as a spray or light drench; 1 ttpg.; A74-300; also, use Natriphene. OR69-272 Read More

CROWN ROT: Of Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In nature these plants grow in swamps under rain or under constant spray from waterfalls and they don't develop crown rot; but when water is allowed to stand in their crowns under warm temperatures... Read More

CROWN ROT: On Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Benlate stopped the rot but did not stop the plant's growth; if leaves are good, active lateral buds likely remain to continue the growth. A75-500; spray with Physan at 1/2 ttpg.; keikis frequently... Read More

CROWN ROT: On Vandaceous Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Pull the center leaves out of the crown, spray with Physan colution, apply a paste of fungicide powder (Dithane M-45) vitamin/hormone, Super-Thrive and water. A85-818Pull the center leaves out of t... Read More

CROWN ROT: Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use Physan 20 or Natriphene; crown rot is not controlled by Benlate. A77-209 Read More

CRYSTAL BEADS: On Pseudobulbs or Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Clear substance like large grains of gelatine or salt; these may be caused by insects boring inside the pseudobulb; soak plant in insecticide solution. A60-535 Read More

CULTURE: Advice on Problems

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Quit what you do do, Begin what you don't; For what you don't do, May agree with them, As what you do do, don't. (Merlin Brubaker) OIE87Sept-6 Read More

CULTURE: Principles

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Everyone must follow them: 1, Simulate native climatic environments in the greenhouse. 2, Adjust all interrelated factors. 3, Base management of simulated conditions on a daily and annual rhythm. O... 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