Newly Posted Articles

PHOSPHATE: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It determines the new, lush green growth and the formation of seed; it tolerates a pH between 6 and 7.5 only: at pH 6 the growth is leggy, weak, harrow and breaks easily, leaves do not hold up; abo... Read More

PHOSPHATE: Properties

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It plays a complex role; forms many insoluble and slightly soluble compounds; their solubility is affected and altered by the pH of the media reaction; under conditions of slight to moderate acidit... Read More

PHOSPHORIC ACID: Salts Remover

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Add it to water to remove salts from the potting medium; water alone can do this quite well as six inches of water will leach out about 50% of the salts in the pot; in regions where the water conta... Read More

PHOSPHORUS: Function in a Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It helps to make the plant flower; if a cymbidium has a low percentage in its tissue on chemical examination, few flowers will be produced. AU87(1)-12 Read More

BARK: Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A typical mixture would have about 15 parts medium bark, 1-1/2 parts coarse Perlite, 174 part charcoal chips (quarter-inch size). OR87-173For cymbidiums in a high humidity area near the ocean in Ca... Read More

PHALAENOPSIS: Under Lights, What Fertilizer Is Best?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A formulation of 30-10-10 for bark is best; use at 1/2 tpg. and spray every two to four weeks, depending on the intensity of the lights. A74-114 Read More

PHOTOPERIODISM: Hours of Complete Darkness Needed by Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There is no generally recognized rule-of-thumb; in general 12 to 15 hours tend to favor flowering; eight to nine hours tend to stimulate vegetative growth; some summer-flowering cattleyas fall betw... Read More

PHOTOSYNTHESIS: New Growths Stretch Towards the Window

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To keep plants grow ing upright when they are some distance from the light source rotate them one-quarter turn every two weeks; install Lazy Susans? A83-698 Read More

BRICKS, BROKEN: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Obtained from house construction; plants do well in suitably sized mixes; under hot light top off the brick in the pot with a layer of bark, AU79-199 Read More

OUTDOORS GROWING: In Miami Area

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago "grow or go" applies to orchids of minor importance in a large garden; plants are attached especially to oak trees on the east side at a point where water sprinklers hit a window-screener pouch wit... 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)