Newly Posted Articles

VIRUS TRANSMISSION: By Vegetative Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago All parts of a plant are invaded, except possibly the seed and all cuttings and keikis are infected if the main plant was infected. OD78-95 Read More

WATER (GENERAL): Low Solute Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Those that do better with low solute water are Lycastes (high elevation types), Masdevallias (Colombia), Houlletia and Coryanthes, Brazilian cattleyas, Paphiopedilum wentworthianum and others, Hunt... Read More

WATER (GENERAL): Sulfur in the Water

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If sulfurous well water is used for drinking it is not likely to harm plants; it has a high pH value, so potting medias other than bark will prove more satisfactory. A65-1003 Read More

MERISTEMMING: And Tissue Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Early meristem culture placed in appropriate context; future possibilities the technique is expected to hold for orchid growers; refer to QR67-37+ Read More

ARCILLITE: Calcined Montmorillonite Clay

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago When added to a vermiculite and gravel mix for cymbidiums has increased moisture-holding capacity by 407o and improved growth on several plants. OA81-6; Hort. sci. '81-176 Read More

ARTILLERY PLANT: Pilea Muscosa

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Grows in orchid pots; treat with Simazine as for Oxalis. A71-609 Read More

ASHTON'S MIX: Medium for Potting Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago About 1945 Al Ashton had a mixture of redwood bark and oak leaves which was used successfully before fir bark became popular about 1950. A71-402 Read More

MERISTEMMING: Shakers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Various models are available, but the rotor wheel is more often used; supplier address given. A77-619 Read More

HEATERS: Kerosene New Types

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A 9000-BTU-per-hour heater can produce sulfur dioxide levels during overnight use, a principal air pollutant which is "controlled" by the U.S. Environment Protection Agency to prevent injury; venti... Read More

CYMBIDIUMS: Culture to Induce Spiking

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago "full-sun" treatment can be successful; give as much sun as possible in the summer including risk of sunburn and with more water and fertilizer, OD68-244The day-night temperature change must be 20 ... Read More