Newly Posted Articles

PLOIDY: A Basic Genetic Concept Dealing with Chromosome Number Levels

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Reproductive egg and sperm carry a haploid set of chromosomes; when hybridized they become diploid (2n) or triploid (3n) or tetraploid (4n) pentaploid (5n),etc; more than 2n are called polyploids. ... Read More

POTS, PLASTIC: Plastic and Styrofoam Pots Washed and Sunned to Eliminate Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It does no good whatever; the pots should be soaked for 10 minutes in Clorox solution 1:5. A73-709 Read More

SENSITIVE OR PSYCHIC PLANTS: Talking to Them Is Advocated

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Whether it is just the carbon dioxide in your breath or the attention given which sharpens the cultural care, it does produce benefits, is claim. OR81-17 Read More

PHALAENOPSIS: Buds Turn Yellow

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In winter, if there is no ethylene contamination, the plants need more light. OB86-220 Read More

CLASSIFICATION: Family Tree

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a one-page chart of all classified genera, refer to David Sander's book Orchids and their cultivation (7th ed., 1969) Read More

CLASSIFICATION: The Dressler System

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a review, refer to AU85(4)-16; for the classification itself see his book R.L.Dressler, The orchids; natural history and classification (1981). Read More

CLEANING LEAVES: Methods

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In a pan of tepid water put about 1/4 teaspoon of Ivory detergent liquid, wet a soft cloth with it and sponge off the leaves using one hand to support the pliable leaf; or, use milk, which is good ... Read More

VIRUS IN PLANTS NAMED: Unsuspected in Popular Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In many commercial and private collections reed-stem epidendrums, including E. ibaguense, are infected with Cymbidium Mosaic virus and show only mild symptoms but they act as prime infectors of oth... Read More

AGE: Expectations of Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Given proper culture, a sympodial orchid should live indefinitely. A81-27 Read More

CATERPILLARS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A B10-Insecticide containing Bacillus rhuringiensis and named Dipe1 EG (in Australia) is effective against them and can be applied over the buds. OD82-106; Thuricide is also safe but slow in action... Read More