Category: Orchid Doctor

CARBON DIOXIDE: How to Create it in a Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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 8 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 8 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 8 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 8 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 8 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 8 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 8 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 8 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 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