Category: Orchid Doctor

GRAVEL: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Quartz stone is a good substrate for Cattleya lablata and many encyclias; it needs more watering than bark and a periodical fertilization. OD87-147 Read More

GREEN POD CULTURE: Harvesting Time in Days

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Aerides 90, Brassavola 90-100, Broughtonia 30-45, Cattleya bifoliates 90; Cattleya unifoliates 120-135; Dend. nobile hybrids 90-100; others 60-75; Doritaenopsis hybrids 90-100; Epidendrums 150-165;... Read More

GREEN POD CULTURE: Harvesting Times

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The time saved by comparison with seed culture is six to eight months; the optimum harvesting times for a long list of hybrids and species is given; refer to A76-305+; OD68-207 Read More

GREEN POD CULTURE: Method

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Surface sterilize the pod with 0.5% sodium hypochlorite for 20 minutes; cut open with a sterile knife; scrape out seed with sterile loop into Knudson-C agar or other nutrient solution; place in inc... Read More

GREEN POD CULTURE: Of Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Technique; medium; culturing done 75 days after pollination of doritis and 85 for phalaenopsis; A62-819+; for embryo culture refer to A60-518 Read More

GREEN POD CULTURE: Time for Pod to Remain on Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 100 days after pollination is sufficient for many genera. A65-909; A75-803 Read More

GREEN POD CULTURE: Time to Remove

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Wait till the flower end starts to turn yellow; aspasias, brassias and odontoglossums are long in ripening, up to ten months; many pods are lost because pods are removed too soon. OD77-101 Read More

GREEN SAND: Sand or Sandstone

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has abundant grains of glauconite which is a hydrous silicate of iron with potassium; occurs especially on the sea bottom; used for paphiopedilum mix additive. A80-37; Ency. Brit. Read More

GREENHOUSE BLANKET: For Heat Conservation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A sheet of plastic drawn horizontally just before sundown across the greenhouse about six feet above the ground to trap the warm air and reduce the cubic area requiring heat; to be withdrawn each s... 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