Category: Orchid Doctor

EPIDENDRUM NOCTURNUM: Variability

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Genetically it is one of the most variable and widespread in America. A77-888,893 Read More

EPIDENDRUM STAMFORDIANUM: Inflorescence From Apex Rather Than Base of Pseudobulb

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is abnormal; but abnormal spiking occurs infrequently with many species. A71-153 Read More

EPIDENDRUMS AND ENCYCLIAS: How to Tell Them Apart

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 1. Encyclias usually have pseudobulbs where Epidendrums have stems usually slender and reed-like, but sometimes with a pseudobulb; 2, in Epidendrums the column is completely united with the lip, in... Read More

EPIDENDRUMS: Reed-stemmed Type

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Notes on breeding which peaked in Hawaii in 1950-60's; E. Obrienianum was most frequently used as a primary hybrid, but most have now disappeared or developed virus. A85-966 Read More

EPIDERMAL GROWTH FACTOR: Animal Hormones

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Present in some organic fertilizers, in mammalian and bird saliva, in blood, urine, milk; it promotes cell division and protein formation. OA83-27 Read More

EPIPHYTES: Growing on the Ground

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many can be vegitatively very successful when they fall to earth; acinetas, stanhopeas flourish on loose soil although the flowers are useless. A73-1062 Read More

EPSOM SALTS (MAGNESIUM SULFATE): Added to Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not necessary; enough magnesium occurs in most water supplies; many fertilizers have magnesium; for a trial use 1 teaspoon in five gals. of water. A68-I059; A69-700; A73-914 Read More

EPSOM SALTS (MAGNESIUM SULFATE): Applied to Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Give them a dose in July when the weather gets warm. OA71-101In Australia it is fed to them for five months in summer. AU78-141It may contribute to spiking. OD68-40; OD71-278 Read More

ERWINIA CYPREPEDII: Rot in Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Also Pseudomonas cyprlpedii, can be cured by soaking the plants in Natriphene or Benlate at stated rates after all the rot has been excised with a sharp knife. OD86-168Brown areas at the base of le... 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