Category: Orchid Doctor

HYBRIDIZING: Sib Crossing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sib crossing of new clones of species with old clones of the same plant may develop fine qualities as an improvement over both parents; more sib crossing to achieve superior forms advised. ODA76(4)-26 Read More

HYBRIDIZING: Species

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Species kept too long in captivity become poor breeders. ODA76(4)-26 Read More

HYBRIDS: Aspects

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The female (pod, or capsule, parent) is always the first name in writing the cross, which is the. opposite for animals; reciprocal crosses make a difference in certain traits such as yellow and ora... Read More

HYBRIDS: Primary Crosses

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In their characteristics they tend to be midway between the two parents; it is in the subsequent generations that "improvements" begin to show up in a breeding programme'. OR87-187 Read More

HYBRIDS: Registration At the Grex Level

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A proposal for publication of the name of the actual cultivar parents for the identification of exact strains (repeats) of particular hybrids, because there is such variation in the quality and cha... Read More

HYBRIDS: To Register

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Obtain a registration form from, and return it to, the Registrar of Orchid Hybrids, Royal Horticultural Society, Vincent Square, London SW1P 2PE, England. A86-814 Read More

HYDRATED LIME: Source for Calcium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If the water supply, like rainwater, is low in calcium it can be supplemented at about the rate of 2.25gr. per five gallons of water; acid rain is low in calcium. AU44-97 Read More

HYDROCHLORIC ACID: As Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To get rid of black spot and bulbrot of cymbidiums after fungicides failed, acid at 1 teaspoon to five gals. water used as a spray twice in seven days was successful. OR73-20 Read More

HYDROCULTURE: Pros and Cons

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchids grown in gravel-filled benches which are periodically flooded produce excellent plants but the roots travel and intertwine inextricably; individual containers should be used, such as plasti... 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