Category: Culture

PALCO WOOL: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Tends to reduce break-down in pots; is broken down rapidly itself by fertilization; if not changed every 12 to 18 months its decomposition will kill roots. OD69-63 Read More

PALCO WOOL: Shredded Redwood Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Used as an additive in potting mixes; tends to be acid. A76-775 Read More

CARBON DIOXIDE: Percentages of Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In air it is about three hundredths of one percent; plants can use greater amounts to approximately 0.5 to 1%; data not related to orchids. OR72-34 Read More

PEANUT SHELLS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is a waste product; shows promise as a substitute for peat moss; use in the coarse form; it provides porosity, drainage, aeration and water penetration; the pH is 5.5, slightly acid, which can b... Read More

PEAT MOSS: Handling

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Persons handling peat moss can contract sporotrichosis an unpleasant fungus infection which can enter the skin through nicks and abrasions, or be inhaled; the first is usually mild and is treated w... Read More

PERLAG: Aggregate

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago As potting medium additive: it is inert, sterile, has neutral pH; experiments with potting 150 seedlings in several mixes; 1/2 coarse Perlag with 1/2 lumpy peat or bark, plus some charcoal is recom... Read More

PERLITE: Aggregate

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Additive to potting mixes: white, light product of volcanic origin; inert, holds water, does not decay; keeps medium open; use agricultural grade. OD77-4; RMH Read More

PERLITE: Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is a calcined mixture of, principally, gypsum (Calcium sulphate) and white clay, with small amounts of other materials all heated to very high temperatures to cause incipient fusion and causing ... Read More

PH (GENERAL): Adjustment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago How to bring it down to normal: do not use a sodium salt; the simplest thing is to use dilute phosphoric acid, at a few drops per gallon of water. A78-698 Read More

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 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)