Category: Orchid Doctor

LIGHTS, GROWING UNDER: Suitable Species

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A list of about 35 plants with low-light requirements; refer to A74-792+ Read More

LIGHTS, GROWING UNDER: Summertime, Moving Plants Outside

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not recommended in areas with only three months summer because the advantages are off-set by problems, especially insects, brought back into the lighted area. A82-393It is recommended in the ... Read More

LIGHTS, GROWING UNDER: Sunrise-sunset Simulation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Turn on half the lights in the morning four hours before the rest of them and reverse the procedure in the evening, with only 10 hours full light in the eyele; this will reduce temperature by seven... Read More

LIGHTS, GROWING UNDER: Transfer of Plants to Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Reduce the light by shading the greenhouse to provide from 2,000 to 2,500fc. of light at noon; until plants are hardened. A75-124 Read More

LIGHTS, GROWING UNDER: Use of Super-high-output Fluorescent Tubes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchids seem to grow faster and require more water and fertilizer than under ordinary lamps; provide three areas of different light intensity; refer to A71-869+ Read More

LIGHTS, GROWING UNDER: Wardian Cases

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The wonder of the Victorian era is back again, this time with the assist of fluorescent lights, to provide a case five feet long with 160 watts of light, with metal trays for humidity, Braun desk-t... Read More

LIGHTS, GROWING UNDER: What Temperature, Humidity, Light Hours and Distance Between Lights and Leaves Required

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Night temperature should be from 60 deg.F. to about 64; day should be 70 to 80 deg.F.; high humidity in the 60 to 70% range recommended; leave lights on for seedlings for 16 to 20 hours. A70-235 Read More

LIME WATER: Recipe

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One tsp. of hydrated lime is dissolved in a gallon of water; may be used to adjust the pH of potting media, upwards. A79-898; 1/2 tsp. limestone per 6 inch pot raises pH 5.0 up. A80-739 Read More

LIME: Added to Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To get the potting mix to 6pH add approximately 20 lbs. of lime per cu.yd. of bark; use dolomite lime or oyster shell flour, or even better, half-and-half of each. A071-29 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