Newly Posted Articles

JEYES FLUID: Disinfectant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Registered for soil conditioning in the U.K. it is used as a spray against such orchid pests as black spot, red spider mite; is useful for eliminating slugs and snails; has been tested on cymbidium... Read More

PYRETHRINS: Extract of Chrysanthemums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Its toxicity reactions in humans: local anesthesia, intestinal distress, headache, ringing in the ears, etc; A68-583; LD-50 is 1,500; relatively safe. OWD Read More

PYRETHRUM: A Safe Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A powder, it can be used in the home, is available as an aerosol spray to be used on flowers on indoor plants; is harmless to bees, but kills ants, aphids, thrips, caterpillars, white fly; it usual... Read More

PYTHIUM BLACK ROT: And Damp-off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by Pythium ultimum; it requires free water in order to spread; community pots are most vulnerable; on older plants black spots should be cut out and the plant soaked in Anti-Damp or Natriphe... Read More

PYTHIUM BLACK ROT: On Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Treatment: drench the plant in Truban at one ounce to 25 gals. water, or 1 level teaspoon in 3 gals. water. A74-34 see also Black rot; Dry rot; Leaf blight; Leaf tip blackening; Pythium ultimum Read More

KITTY LITTER: As a Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rupiculous laelias grow well in it provided it is not too deep; on a small log it can be scatted over the roots of mounted plants to lodge between them. OIE87Jan-l Read More

HEATERS: Wood-burning Stoves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are not recommended because they ruin most orchids unless the draft is fully open at all times to discharge fumes into the neighbour's back yard. A81-526 Read More

KOCIDE: Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not listed by the Florida Extension Services for use on orchids; it contains copper and in the tropics where citrus trees are sprayed with copper, no orchids grow. A85-1119 Read More

LACEWINGS, GREEN: A Predator Insect

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Can be purchased and released in the greenhouse to eliminate some flying pests. A86-1141 Read More

PH (GENERAL): Of Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Experiments show that if a recommended medium is chosen the initial pH should cause no concern. Hort. revs. 1983-195 Read More

Ailments

(931 articles)

Angraecoids

(41 articles)

Announcements

(4 articles)

Beginners

(21 articles)

Book Review

(4 articles)

Bulbophyllums

(2 articles)

Cattleya Alliance

(95 articles)

Conservation

(16 articles)

Culture

(1363 articles)

Curiosity

(49 articles)

Cymbidiums

(163 articles)

Dendrobiums

(29 articles)

General Discussion

(3 articles)

Oncidium Alliance

(64 articles)

Orchid Doctor

(3579 articles)

OrchidWiz

(27 articles)

Other Genera

(12 articles)

Paph Alliance

(78 articles)

Phalaenopsis

(83 articles)

Pleurothallids

(1 articles)

Propagation

(184 articles)

Scientific

(4 articles)

Site Navigation

(2 articles)

Species

(62 articles)

Travelogue

(2 articles)

Vandaceous

(26 articles)