Newly Posted Articles

PH (GENERAL): Of Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Experiments show that if a recommended medium is chosen the initial pH should cause no concern. Hort. revs. 1983-195 Read More

AMMONIA: Vapour as Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 19th. C. methods; pieces of carbonate of ammonia placed near heating pipes; soot and lime mixed dry, or, ammonia in solution, twice a week, OR73-333 Read More

HEATERS: Wood-burning Stove

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is apt to emit too much ethylene if it is not properly vented; burning wood is one of the worst sources of ethylene; it is now a crime to burn wood for heating purposes in London. A81-1436 Read More

LIGHTS, GROWING UNDER: Basic Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A review of requirements and conditions for successful culture; "low-light" category of plants are most adaptable; suitable species mentioned. A81-421; 536; A86-595 Read More

BARK, REDWOOD: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Shredded bark used as insulation material and sold as Palco Wool was treated with fire-retardant ammonium phosphate which caused remarkable growth of plants. A87-1041 Read More

CYMBIDIUMS: Repotting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago After flowering the plants are divided into 4-; or 5- bulb sections and repotted; roots may be trimmed first. A81-526Begin in January right after flowering starts; slice off an inch of the old root... Read More

PAPHIOPEDILUMS: Limestone Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plants which grow on limestone cliff faces, or terrestrials and epiphytes in limestone areas: Paph. bellatullum, chamberlainianum, concolor, curtisii, delenatii, exul, fairieanum, glaucophyllum, go... Read More

LIGHTS, ELECTRIC: Use of Green, Red or Yellow Bulbs in a Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The night-time use in a greenhouse of an ordinary light bulb for working purposes will not bother the plants. A81-526 Read More

PH (GENERAL): Of Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A pH8 to 9 of the 30-10-10 fertilizer is natural and should not be adjusted because the alkaline state changes to the acidic side when used by the plant. A81-27 Read More

BENLATE: On Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Caused production of infertile pollen. A79-898 Read More