Newly Posted Articles

FUNGICIDES: Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Captan, Dexon, Dithane, Ferbam, Morton's Soil Drench, Natriphene (Dowicide A), Panogen, Parzate C, Z-78, Zineb, OD67-50Dithio-carbonic acid derivatives: Ferbam; Nabam; Thiram, Zineb, Ziram; also Ca... Read More

FANS: For Air Circulation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Use small fans (eight or ten inches) so as not to produce excessive air currents; in large greenhouses use turbulator fans, suspended from the top. A63-392 Read More

HEATERS: Wood-burning Stoves

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago They are not recommended because they ruin most orchids unless the draft is fully open at all times to discharge fumes into the neighbour's back yard. A81-526 Read More

REDWOOD BARK: Chips

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago They are high in acidity; when added to potting mixes they lower the acidity and prevent white mold from growing; the lower acidity also helps to increase the availability of nutrients. F74-165 Read More

PH (GENERAL): Of Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Experiments show that if a recommended medium is chosen the initial pH should cause no concern. Hort. revs. 1983-195 Read More

LEAVES: On Ascocendas Have Bacterial Leaf Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Bordeaux mixture is not very effective against bacteria, so use Physan at 15 ml. per gal. of water. A74-792 Read More

LEAVES: On Cattleyas Are Black Edged

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Inadequate light contributes to dark, soft growths which are not self-supporting; brown, drying edges indicate root injury. A71-1021 Read More

LEAVES: On Cattleyas Are Drooping

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Check roots for possible bush snails or for over-watering; the root system is the key to healthy plants. A77-449 Read More

LEAVES: On Cattleyas Have Black Tips

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago On new growth it goes no farther than the pseudobulbs; spray with Truban or Terrazole, at 1 tpg. A79-4 Read More

HEATERS: Wood-burning Stove

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago It is apt to emit too much ethylene if it is not properly vented; burning wood is one of the worst sources of ethylene; it is now a crime to burn wood for heating purposes in London. A81-1436 Read More