Category: Orchid Doctor

CATTLEYAS: Bifoliate Species in Breeding

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Yellow, orange, red and green hybrids as derived from C. aclandiae, aurantiaca, bicolor, forbesii, granulosa, leopoldii (guttata), schillerana, and velutina; refer to OD74-5+ Read More

CATTLEYAS: Brown Striations and Cracks Show in Pseudobulbs

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago These curious striations are abcission zones which produce cracks; cause is not known nor is a cure; apparently not pathological. A66-311; AH59 Read More

CATTLEYAS: Control of Blooming Time

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flowering control must be started before buds are initiated. A69-524 Read More

CATTLEYAS: Control of Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use of lights in speeding up growth at different temperatures, to maintain flowering every six months; refer to A59-163+ Read More

CATTLEYAS: Cracking of Pseudobulbs Horizontally

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some break off at the crack line; they develop year after year; possibly genetic in source; treatment for nutrient deficiency has not been effective. AH59 Read More

CATTLEYAS: Fertilizing Program

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago High nitrogen 30-10-10 or 10-10-10 is good for period March to October at 1 tpg every 10 or 14 days; from November to February apply every 21 to 28 days; for every fourth feeding all year long use ... Read More

CATTLEYAS: Flared Petals

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flaring is a rather unstable characteristic which varies from one blooming to another; it is known as peloria; the Lc's. stem from Laelia purpurata; the straight cattleyas from C. intermedia, espec... Read More

CATTLEYAS: Flowers "sooting"

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago May be flyspeck (microthyriella) or leaf-spot (Phyflos tictina pyriformis); use Benlate 1 ttpg.; use also more ventilation. A79-124 Read More

CATTLEYAS: Flowers Open Prematurely

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cloudy weather causes short-day effect and stimulates flowering; weak light causes lack of carbohydrates. A77-619 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