Newly Posted Articles

BLACK ROT: Tips of New Cattleyas Turn Brown

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by a fungus; remove all infected growth; soak pot and plant in 1/2 tpg. Dexon-35 or Benlate. A72-686; F69-94 Read More

PSEUDOBULBS: Twisted Bulbs on Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago These can develop for no apparent reason, except that water lodging in immature growths may be the cause. A85-832 Read More

BLACK ROT: Pythium Sp. of Fungi

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago On cattleyas; cut rot away ruthlessly; burn the compost; immerse plant in Orthocide captan at 1 teaspoon to 1 pint water for one hour. OR76-99 Read More

BLACK ROT: Pythium Ultimum

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Most destructive of cattleyas, others are susceptible; similar symptoms to Phytophora cactorum; small water-soaked spots, later turn purplish black; yellow margin advances; spread quite rapid, 2 or... Read More

SENSITIVE OR PSYCHIC ORCHIDS: The Life Force

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A digest of a talk on the "aura" of plants; use of a pendulum to determine vitality; words on the axis of development; proper geographic orientation of plants necessary for their thriving. NH74(2)-5 Read More

PLASTICS: For Greenhouses

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are no standards for construction or quality and no specifications; clear is suggested for orchids, or, also known as colorless, with ultra-violet resistance. A75-298 Read More

CYPRIPEDIUMS: Grown in a Northern Garden

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 12 native and exotic terrestrials grown successfully, with descriptions and cultural requirements; refer to CA84#2-20;#3-20 Read More

BLACK ROT: Treatment with Dexon

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Remove diseased parts; soak or drench pot in one teaspoon per two gallons water three or four times at 10 to 14 day intervals; it is surface effective only. A74-969 Read More

BLACK ROT: Two Kinds Are Prevalent

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One is a cool-weather rot, the other is a warm-weather type and both cause blackening of leaf tissue; both are contagious and can be spread by splashing water; keep plants dry, spray with Benlate; ... Read More

CYPRIPEDIUMS: Culture in the Garden

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Germany, cultural methods described for species gathered from all over the world; refer to OR77-340+ 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)