Category: Orchid Doctor

CARBON DIOXIDE: How to Create it in a Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Burn candles or an alcohol lamp. A70-725 Read More

CARBON DIOXIDE: Percentages of Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago In air it is about three hundredths of one percent; plants can use greater amounts to approximately 0.5 to 1%; data not related to orchids. OR72-34 Read More

CARBON DIOXIDE: To Accelerate Plant Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Orchid tests carried out in Victoria, Australia with generator resulted in 25% additional growth, with spiking six weeks earlier. OD70-214 Read More

CARBON MONOXIDE: Great Damage to Plants Claimed

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Damage likely caused by some other agent, more likely ethylene; orchids are most sensitive of all plants to ethylene. A72-534 Read More

CARBONATE OF AMMONIA: As Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Small pieces, walnut size are placed near the heating pipes and their evaporation carries nitrogen to plants where it seems to be absorbed; one pound per year can be used in a greenhouse 20 ft, by ... Read More

CARRAGEENAN: As Substitute for Agar in Flasking Formulas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago In transflasking dendrobium seedlings into formulas where it was substituted, at various percentages, the plantlets grew well.A83-1177 Read More

CAT LITTER: In Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago A calcined clay or shale product sold in supermarkets is slightly alkaline and becomes neutral with use; cymbidiums grow well in it in small containers but some show signs of chlorosis when it is u... Read More

CATALOGS: Of Commercial Growers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago The care put into catalogs is an indication of how their plants are grown, selected, packed, shipped; poor catalogs and price lists mean "lousy" plants. A80-1142 Read More

CATALOGS: What They Should Include

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Cultural information, size of the mature plant, temperature preference, time of bloom, fragrance if any, whether suitable for growing under lights, or for windowsill culture. OIE85Sept-3 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 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