Newly Posted Articles

BARK, REDWOOD: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Shredded bark used as insulation material and sold as Palco Wool was treated with fire-retardant ammonium phosphate which caused remarkable growth of plants. A87-1041 Read More

ALGAE: In Rainbarrel

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To destroy it add some sodium hypochlorite, then aerate to free the chlorine; exclude light by covering barrel with black polyethylene. A67-579 Read More

ALGAE: In White or Clear Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In areas of strong light algae grows inside plastic pots which are translucent; dark pots exclude light. A72-490 Read More

ALGAE: Its Effect on Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Algae can be harmful to plants grown in clay or crockery pots by covering the roots, so wash it off the pots and water less. A81-688 Read More

LEAVES: On Cattleyas Show Shrivelling

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Suspect dryness of culture; cattleyas like high humidity, but too heavy watering can kill the roots. A75-1007 Read More

LEAVES: On Oncidiums Are Accordion-folded

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In a window area this could be caused by too low humidity; the effect of misting lasts only 1/2 an hour. A75-1096 Read More

REPOTTING: Basic Rules Everyone Should Follow

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Do it at least once every two years, although there can be exceptions; both heavy watering and fertilizing can shorten this period; sympodials can be done either when root growth begins in spring a... Read More

STAGHORN FERNS: In Florida

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Fastened to an oak tree they provide remarkably good symbiotic relationships with many orchids and encourage their growth. F85-5; attractive to cattleyas and vandas. Read More

LEAVES: On Phalaenopsis Droop Suddenly

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cool nights followed by sunny mornings can trigger this, or excessive drying. A75-437 Read More

PH (GENERAL): Of Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A pH8 to 9 of the 30-10-10 fertilizer is natural and should not be adjusted because the alkaline state changes to the acidic side when used by the plant. A81-27 Read More