Newly Posted Articles

SELF-POLLINATION: In Some Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Autogamy is one type of self-pollination and occurs in an open flower where pollen is transferred to the stigma without an intermediary or pollinator; cleistogamy is the other type and occurs in an... Read More

SELF-POLLINATION: Undesirable

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is a characteristic of Epidendrum belvederense, Dendrobium brymerianum, Cattleya aurantiaca as species or clones; they do not open their flowers well, since the self-fertilization takes place in... Read More

SELF-POLLINATION: Undesirable Habit

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is notable in Cattleya aurantiaca and others; the stigmatic fluid spills into the anther cap and the pollen tubes penetrate the stigma. A72-198; in some paphiopedilum species, also. A72-592 Read More

SENSITIVE OR PSYCHIC ORCHIDS: Lie Detector Used

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Experiments by Cleve Backster reported in Medical world news, March, 1969, on the use of the polygraph on plants; for details refer to ODA69-48+ Read More

NITROGEN: Best Amount for Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For cattleyas grown in glass marbles 50 ppm. is good; optimal is 100 ppm. equivalent to 4.5 oz. of ammonium nitrate in 100 gals, water, quite low; one oz. in 7,830 gals, is 1 ppm. C72-223; OA79-129... Read More

OASIS: Used in Holland

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is broken up into pieces about one-half inch in size; roots of cymbidiums encompass the medium into a root-ball mass. OA84-12; OIE86Sept-10 Read More

NITROGEN: Optimal Amounts

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 100 parts ppm. appear to be optimal for phalaenopsis and cymbidiums, for cattleyas, 50ppm. SA85-168 Read More

NECROTIC STREAKS AND PITS: Caused by Cymbidium Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It affects cattleyas, epidendrums, laelias, phalaenopsis, lycastes, miltonias, oncidiums, vandas; in the early stage it resembles false spider mite injury; there is no remedy. A73-818 Read More

CYPRIPEDIUMS: Grown in a Northern Garden

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 12 native and exotic terrestrials grown successfully, with descriptions and cultural requirements; refer to CA84#2-20;#3-20 Read More

CYPRIPEDIUMS: Culture in the Garden

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Germany, cultural methods described for species gathered from all over the world; refer to OR77-340+ Read More