Category: Orchid Doctor

BLETILLA HYACINTHINA: Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A terrestrial, requires same culture as phaius; can be grown outside in the south U.S.; needs half-shaded moist area; in greenhouse give broken sunlight, lots of water, good drainage, and a medium ... Read More

BLISTERS: On Phalaenopsis Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If round, and look water-soaked, they are probably botrytis fungus; keep humidity lower at night; use a fan; water early in the morning. A72-412 Read More

BLISTERS: On the Tips of Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Not uncommon; are due to various causes; will not spread or cause harm. A72-204 Read More

BLOOD MEAL: A Common Source of Organic Nitrogen

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Contains 13% nitrogen; used as a dry feed top dressing; nitrogen released through activity of micro-organisms in about ten days to two weeks in warm weather; apply 1 teaspoon to a six inch pot; odo... Read More

BLOOD MEAL: Use as a Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Powdered form contains eight to twelve percent of nitrogen, part of which is quickly available to plant roots, part within a few weeks; sprinkle dry form 1/4 teaspoon evenly over surface of 6 inch ... Read More

BLOOMING TIMES: Control of Bud Opening

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cooler temperatures slow plant development most of the time; to delay flowering, plants should be cooled before the bud stage. A85-611 Read More

BLOOMING TIMES: How to Accelerate Them

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A lower temperature retards flowering and a higher one will accelerate them by about a week. A81-969 Read More

BLOOMING TIMES: Off Season

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The flowers are usually different and of poorer color. NH78(1)9 Read More

BLOSSOM BROWN NECROTIC STREAK: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Caused by Cymbidium Mosaic Virus; a disastrous disease; after a few days flowers show brown streaks and spots, mostly along the veins; spot necrosis is quick and ranging in area; shows in cut flowe... Read More

ACID OR ALKALINE: Changing the Values

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