Category: Orchid Doctor

LEAVES, PLEATED: On An Oncidium Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If new leads produce short, split, pleated leaves it is possibly because of a salt problem in the pot; change to plastic pots; under-watering is another partial possibility. A80-254 Read More

LEAVES, PLEATED: On Calanthe, Lycaste and Phaius Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Add extra humidity by syringing early in the day; the "pleating" on these is normal and not across the veins. A67-139 Read More

LEAVES, PLEATED: On Plants Generally

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is sometimes caused by low humidity. A70-798; A78-112 Read More

LEAVES: Bifoliate

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Have a tendency to weak growth if grown in too much shade; color should be olive green, not dark green. OD66-124Suddenly appear on a labiate plant; good culture causes it. A69-242 Read More

LEAVES: Black Tip

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Control: it is probably a fungus; if the area increases in size, spray with Banrot at 1 ttpg. A79-370 Read More

LEAVES: Black Tips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They progress downwards rapidly to the pseudobulb; probably black rot; spray with Truban (Terrazole); provide good air circulation. A78-112 Read More

LEAVES: Cleaning Salts Off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use 1 teaspoon vinegar in a cup of water, also use cotton swabs and water to wash the surface clean of salts or other coatings. OIE88Jan-7; citric acid 1 tbsp. to 1 qt. warm water. OIE88Mar-2 Read More

LEAVES: Cleaning Them

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For show display it is legal to clean them with 1 pt. evaporated milk to 10 pts. water; it's illegal, however, to use a "leaf shine" preparation on plants to be judged; they also harm the leaves. O... Read More

LEAVES: Clear Liquid Drops At Tips

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by a sap exudate stimulated by moist media and humidity; it is normal. A77-108 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