Newly Posted Articles

PATENTED ORCHIDS: Under the Plant Patent Act

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago New varieties in the U.S., including sports, mutants, seedlings and hybrids can be protected under the Act for exclusive rights to make, use and sell; Read More

PAPHIOPEDILUMS: Their Diseases and Insect Pests

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For an up-to-date review with controls, refer to OD83-55 Read More

PAPHIOPEDILUMS: To Force Blooming

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In the home, place the plants on an unhealed windowsill in December or January for a month and do not water . OIE87Jan-3 Read More

WATER BALANCE (HARD): Classification

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Less than 175ppm. is best; 175 to 525 is good; 525-875ppm., use it with caution; over 875ppm. find a new source. AH86-95 Read More

WATER BALANCE (HARD): Hardness and Fertilizing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The suggested dilutions on one patented fertilizer container varies according to the hardness of the water. OR81-184 Read More

WATER BALANCE (HARD): Poor Quality Menace

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Hard water is a slow and dangerous killer, and sneaky, if derived from a well with 470ppm. of soluble minerals; symptoms, effects on mounted plants, pH of water as a contributing problem; the remed... Read More

WATER BALANCE (HARD): Soluble Salts Content

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Less than 125ppm. is excellent for use, more than 800ppm. should not be used. Hort. revs. 1983-291 Read More

WATER BALANCE: Loss by Evaporation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are few plants from 6500 ft. elevation that can be cultivated at sea level because higher temperatures cause a water loss that cannot be compensated for by prodigious watering at the roots. O... Read More

WATER HEATER (HOT): Used for Disinfecting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Most pests harmful in the pot or mix can be killed at 160 dF, so dipping both pot and mix, with a float-proof cover, in hot water for 10 minutes is simple and effective. OA80-79 Read More

WATER BALANCE (HARD): High in Iron, Calcium and Carbonates

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Indiana, the old answer was "Drink it first" to make it suitable for plants, otherwise put in a de-ionizer or use a fertilizer formula that does not contain those minerals, and the iron should b... Read More