Category: Orchid Doctor

STEMS, FLOWERING: Too Short on Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is caused by too much light. A76-206 Read More

STEMS, FLOWERING: Too Weak

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago This can be caused by a low potash supply in the feed; or, by heredity; try using a high potassium fertilizer. A61-227 Read More

STEMS, FLOWERING: Too Weak and Bending on Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Over-fertilization contributes to the weakening of flower stems, but the most probable cause is insufficient light; next probable is excessively high night temperature. A63-730 Read More

STEMS, FLOWERING: Too Weak to Hold Up Flowers Without Staking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is partly a genetic problem but the better the light and the better the culture, the stronger the stems; weak light, crowding, and higher night temperature contribute to weak stems. A68-1107 Read More

STEMS: On Cattaleyas Not Erect

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago This is caused by too much shading or too much nitrogen, or possibly the plants shading each other. A82-487 Read More

STEMS: Too Weak for the Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Weak stems can be caused by dull and/or short days, overfertilization with nitrogen, loss of sheath, or flowers bred too large for their stems, especially common in Brassavola crosses . A84-819 Read More

STEMS: Weak in Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago P. bellatulum and P. concolor have naturally weak stems. A88-34 Read More

STERILIZATION: By Microwave Ovens

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flasks with agar medium and stoppers can be qui ckly processed, but care is necessary, for details of two methods, refer to OR86-334 Read More

STERILIZATION: Compost

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago With heat: heat the compost at 180 to 190 deg. F. for 30 minutes. A71-21 Read More

STERILIZATION: Cutting Tools

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Place in sodium hydroxide 20% solution for half a minute; in trisodium phosphate 15% solution for 15 to 30 minutes; in 5% clorox solution for five to 10 minutes. AU87(1)-16Use cheap cigaret te ligh... Read More