Category: Orchid Doctor

GRAMMATOPHYLLUM SPECIOSUM: Of Difficult Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Considerable heat is required; it tolerates both shade and sunlight; requires liberal watering and good drainage with brick pieces; try a medium of 60%, bark, 20% peat moss, 10% redwood bark fiber,... Read More

GRANULES (G): Pesticides

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They contain 1 to 20% of the active bug killer impregnated into clay, etc.; they are heavy and minimize air drift when scattered and reduce contamination of surrounding areas; normally can be aplli... Read More

GRASSHOPPERS: And Katydids in Florida

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Damage is rarely severe; grasshoppers are active by day and katydids by night; no control given. DK16 Read More

GRAVEL CULTURE: Cleaning the Gravel

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Let it soak overnight in 10% bleach to ensure cleanliness. A85-1237 Read More

GRAVEL CULTURE: Comparative Merits

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

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It will not produce one more flower or leaf than will bark, or osmunda, etc. under good culture. A81-393 Read More

GRAVEL CULTURE: Pebbles

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One grower favors them for a collection of epiphytic orchids. OA82-7 Read More

GRAVEL CULTURE: Pros and Cons

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

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