Category: Orchid Doctor

DITHANE: Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For anthracnoses, rusts use 8 teaspoons of Dithane (Fore) 80%WP per Imperial gallon of water; it is compatible with most wettable powders including Kelthane AP; it is moderately toxic to man, LD50 ... Read More

DITHANE-M45: Is it Safe?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago At the rate of 1.5 tpg it is as effective as Captan Ferbam or Maned for control of botrytis, rusts, but is not as good as benomyl. A80-960 Read More

DITHIO SMOKES: Also Known as Dithione, Thiotepp or Sulfotepp

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago An organophosphorous compound highly toxic to man; but smoke generator use can be safe and convenient in greenhouses; use in late afternoon or evening; post warnings on greenhouse doors; lock them ... Read More

DIVIDING CATTLEYAS: Minimum Number of Pseudobulbs to Keep on a Division

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Four or five give the best results. A70-55 Read More

DIVIDING PLANTS: Divisions Progress Well Then Falter

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Water them lightly, place plant in polyethylene bag and close the top; keep out of the sun. A70-631 Read More

DIVIDING PLANTS: The Best Time

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago When new roots are forming on the latest rhizomes, even if flowers or sheath are forming on other pseudobulbs; use discretion. A70-345; OD71-27 Read More

DIVIDING PLANTS: Use of Rooting Hormones

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchid divisions are not affected by them; nor is there need to treat the cut ends of rhizomes with chemicals. A75-1007 Read More

DIVIDING: Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Disinfect all tools used for cutting; paint the surfaces' cuts with Bordeaux paste or asphaltum paint. AH86-76Propagating on a small scale; necessary steps in dividing and making best use of backbu... Read More

DORMANT SPRAYS: Not Suitable for Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Dormant sprays are intended for use on plants in dormancy induced by cold weather; they may kill orchids. OD78-42 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More