Newly Posted Articles

WEED CONTROL: With Simazine Herbicide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Experiments on weed control in pots of cattleyas, dendrobiums and vandas; results of extensive testing showed high effectiveness and low or no toxicity to plants. A63-521+ Read More

WEEDS: Control in Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Spray with 50% chlorox solution with a wetting agent; the elimination of oxalis, chickweed and mustard means fewer insects in the area. A88-256 Read More

WEEVILS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Lindane is useful, at a formulation lower than recommended; it is toxic at LD50-1/2 oz. A68-583 Read More

WEEVILS: Insect

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Vine weevil a common pest; they are black about 15mm long with a prominent snout; unable to fly they move slowly and can be easily caught with a flashlight; they cut notches in leaf and flower edge... Read More

WEEVILS: Types and Damage

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago There are many of them and most are nocturnal ; they damage leaves, pseudobulbs, flower stalks, sheaths, flowers, by eating them; some prefer paphiopedilums; they lay their eggs at the base where m... Read More

TAXONOMY: Basics for the Grower

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Identification, nomenclature, classification outlined; refer to Wl1-331 Read More

TAXONOMY: Lumpers and Splitters

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago In the history of botany the splitters who break up families always win. OD81-188 Read More

CYMBIDIUMS: Temperature to Set Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Nights in December and early January should be 50 dF or lower temperature, increased to 55 dF a bit later in the season; when the flowers are developing the rise should be to 60 dF; the daytime ran... Read More

CYPRIPEDIUMS: Seed Culture Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Hyponex 3 grams; Difco-Bacto peptone or tryptone 2 grs.; sucrose (sugar) 35 grs.; agar 15 grs.; water 1,000 ml.; pH adjusted to approx. 5.0; A63-927; native terrestriaals almost never have have bee... Read More

CYPRIPEDIUMS: Vanishing in the Wild

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago In Manitoba an unidentified fungus is destroying many native orchids; can we blame acid rain? A85-1196 Read More