Category: Orchid Doctor

CHANG MEDIUM: Formula

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 6ml. Atlas Fish emulsion; 2gr. Peptone, 20gr. Sucrose; 1000 ml distilled water; Agar 12 gr.; for this and many other culture or flasking media refer to OBII-243 Read More

CHARCOAL BRIQUETTES: Do Not Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are made with materials that can be harmful if used in potting mixes. F77-115 Read More

CHARCOAL CHIPS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Hawaii, all vandaceous orchids grown in straight charcoal chips; fewer problems encountered from bacterial and fungal pests, A76-227 Read More

CHARCOAL: Activated to Adsorb Ethylene

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Pulverized charcoal activated by baking for two hours at 400 deg. and then hung in the greenhouse was claimed successful; activated monthly. A76-817; it definitely will not remove it by itself; air... Read More

CHARCOAL: Additive to Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It does not "contain" much of anything except Cftrbon, it is used to "buffer" the compost to stop buildup of fertilizer or excess salts; the right type from a charcoal kiln must be used, whatever t... Read More

CHARCOAL: As Drainage

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is no better than broken crocks, crushed rock, coarse gravel, etc.,; may be reused after soaking in 10% solution of Clorox for 15 minutes or more or heating it in the oven at 250 deg.F. for 20 t... Read More

CHARCOAL: As Potting Drainage

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago After one year's use the plants went back; it seems to filter out and retain harmful matter in the mix. AU79-199When used for "crock" it seemed to absorb fertilizer salts and soon became toxic to b... Read More

CHARCOAL: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Because cellulose and lignin have been burned out in its manufacture it will last much longer than bark; suitable fertilizers are 18-18-18 or 20-20-20 at Itpg. A82-487Current use in U.S.A.; needs t... Read More

CHARCOAL: For Vandas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If entire mix is charcoal, supply all the trace elements; be sure to leach periodically. A78-1124 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