Category: Culture

GRAVEL CULTURE: Comparative Merits

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Phalaenopsis do very well, cattleyas not so well as in osmunda, mexi-fern or bark; much used around 1950, now confined to phalaenopsis; takes more labor; more problems with bush snails. A65-1003+ Read More

GRAVEL CULTURE: Pros and Cons

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Florida area; advantages and disadvantages listed; comparison results with osmunda and bark; specific successes listed; refer to A57-778+; gravel culture instructions; refer to N303+; gravel con... Read More

GRAVEL CULTURE: Success with 12 Different Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Roofing gravel used; 75% feldspar, quartzite and quartz, 25% calcite, decayed marble, limestone and garnet (decreasing in that order); 1/4 to 1/2 inch sizes, smooth and mostly round; treat with 75%... Read More

GRAVEL CULTURE: Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Large pea-sized particles of gravel held too much water in the bottom of the pot; half-inch sized granitic and half-inch or more feldspathic pebbles were selected; organic fertilizer preferred; if ... Read More

GREEN POD CULTURE: Harvesting Times

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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 over 7 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 over 7 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 over 7 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 over 7 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

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 Read More