Category: Orchid Doctor

BUDS: Brown, Spotted and Chewed

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by possible infestation of snails; use Sevin or Zectran. A77-314 Read More

BUDS: Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Injury by two-spotted mites, illus. in A73-714 Read More

BUDS: Deterioration in Sheath

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is not a disease; plant probably lacks food reserves if it has been grown under too much shade; save buds by removing sheaths before they turn brown. A71-535 Read More

BUDS: Fail to Open, Dry Up and Fall Off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Gas heater should be checked for ethylene emission. A77-449 Read More

BUDS: In Sheath on Cattleyas Stopped Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Could be cultural or genetic; no suggestions to offer; if buds are alive remove sheath. A75-1007 Read More

BUDS: Initiation Within Cattleya Sheaths

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In response to a signal, probably of chemical origin, the base of sheath develops rudimentary flower buds; the chemical signal is a hormone triggered by day length shorter than a critical length de... Read More

BUDS: Kept Closed by Sticky Secretions

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Excessive sugar is produced, sometimes following too much light, probably on a clear frosty morning, so a slight increase in the morning temperature should solve the problem; raise the thermostat a... Read More

BUDS: Not Opening Fully

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Phalaenopsis amabilis: suspected cause is abnormally low humidity; try syringing buds to dissolve nectar. A77-702 Read More

BUDS: On Cattleya Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Shrivelled and soft, drop when touched; probably ethylene toxicity is the cause; check valves and controls on burner of dynavent heater using propane as fuel. A73-155 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