Category: Orchid Doctor

LEAVES: On Phalaenopsis Droop Suddenly

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cool nights followed by sunny mornings can trigger this, or excessive drying. A75-437 Read More

LEAVES: On Phalaenopsis Have Thin Marginal Edge with No Chlorophyll and Some Turn Blackish

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cause not known; may be due to excess salts in the water, or accumulated in the medium. A75-298 Read More

LEAVES: On Phalaenopsis, Show White Patches

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Damage by cold water causes sunken cell wall collapse; water dripping from the roof in winter causes it. F85-8 Read More

LEAVES: On Vandas Turn Yellow and Drop

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Repot the plant in loose medium dampen it and place in a plastic bag in indirect light. A75-35 Read More

LEAVES: Purplish Pigmentation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by too low night temperatures, or too bright daylight; also caused by lack of adequate phosphorous. A64-693 Read More

LEAVES: Removal From Ailing Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Most important is the removal of most leaves from a dessicated plant recently received with no roots; when little or no means to replenish water exists the plant should be relieved of a good portio... Read More

LEAVES: Removal Time

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Do not cut them off until they dry and shrivel and are ready to fall. A76-115 Read More

LEAVES: Samples Sent by Mail for Inspection

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Do not wrap them in Saran or polyethylene but in a single fold of waxed paper. A71-439 Read More

LEAVES: Shrivelling on Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is caused by several things, such as dryness of culture, lack of high enough humidity, roots possibly dead from over-watering. A86-383 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