Category: Orchid Doctor

CYMBIDIUMS, MINIATURE: Temperatures Required

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Maximum and minimum difference is less than that required for standards (25 deg.F.); when grown with cattleyas they flower a month or two earlier. OD74-136 Read More

CYMBIDIUMS, MINIATURE: Ten Great Ones

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Chosen by J.Burkey: Amesbury 'St.Treva', Bulbarrow 'Friar Tuck', Changing Times 'Santa Barbara', Cracker-Jack 'Midnight Magic', Dolores Hoyt 'Limelight', Excalibur 'Galahad', Ivy Fung 'Cossack', Mi... Read More

CYMBIDIUMS, NOVELTY: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Those with a dwarf flowered species in their background. OA79-174 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: 6n Polyploids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago New development with potential is the use of 6n crossed with diploids (2n) to produce tetraploids (4n); 6n plants were produced by treating triploids (3n) with colchicine; desirable features of 2n ... Read More

CYMBIDIUMS: Analysis of Hybridization

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Percentage composition of species in the lineage provides indication of exhibition quality of the flowers; assumptions of the criteria applied; the norm is 50% C. insigne, 25% C. lowianum, 25% C. e... Read More

CYMBIDIUMS: Backbulbs, Starting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Pot them in perlite in plastic pots covering the bulbs to two-thirds of their height. A74-205 Removal of new growth from a backbulb to induce another growth may best be done when the first new g... Read More

CYMBIDIUMS: Bleed Lips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is usually caused by pollination removal of the anther cap and injury to the labellum; causes reddish coloration of the lip; does not occur in albinos. AU78-143 Read More

CYMBIDIUMS: Blisters on Backs of Sepals and Petals, Cause

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Red spiders cause them, if they are without discoloration; aphids cause discolored spots and necrotic lesions. A64-693 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