Category: Orchid Doctor

ALKALOIDS: And Other Chemicals

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Their extraction from a wide range of plants collected in Peru; data on their practical applications; refer to A80-1341 Read More

ALKALOIDS: Contained in Some Phragmipediums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Analysis of a number of species; for details refer to A81-1346 Read More

ALKALOIDS: Nitrogen-containing Compounds

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Definitions and chemistry; refer to W2-349+; OB1-97+ Read More

ALLERGIES: And Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Because the plants are not wind-pollinated their pollen is non-allergenic to humans; but some scents can affect people in other ways: Cochleanthes discolor produces eucalyptol which smells like Lis... Read More

ALLOTETRAPLOIDS: Colchicine Converted Cymbidium Tetraploids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Expected to have an impact on orchid breeding greater than meristemming. OA75-213 Read More

ALL-WET WAY: Deflasking Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Start them off to early blooming by using extra light, extra heat and extra water, especially successful for phalaenopsis in northern areas, by means of growth lamps, heating cables under the plant... Read More

ALTITUDES: Effect on Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago High altitude plants moved to sea level need approximately same temperature as before for night and day, especially if from 5,000 to 6,000 ft. level; those from 2,000 to 3,000 may need only lower n... Read More

AMINE SOLUTIONS: On Tree Barks

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Amine levels build up on tree barks between rains; they are built up in niches where algae grow, to be leached out with next rain, to feed roots with enriched solutions. OD73-72 Read More

AMMONIA: In Atmosphere

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Presence in the jungle, also in 19th C. orchid culture; conjectures and possibilities; refer to OR73-333; OR75-141 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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