Category: Phalaenopsis

PHALAENOPSIS: Light Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A very dark day in Illinois produces about 500fc; grow your phalaenopsis at 600 to 800fc. OD73-158Provide only a little less light than for cattleyas; use 1,500 to 2,000fc. A70-798 Read More

PHALAENOPSIS: Flower Stem Initiation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A night temperature of 60 deg.F, is low enough to do it. F72-90 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

PHALAENOPSIS: Bacterial Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Erwinia cyprepedii is the probable cause; the recommended treatment for it, Natriphene, failed; try cultural practice as outlined fully; spray with Tersan 75 at 1 tpg, three times spaced fortnightl... Read More

PHALAENOPSIS: Buds Fall Off in the Home

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The chances are good that the atmosphere in the home in winter is too dry because of low relative humidity, so place the plants on pans of gravel ana water. A83-1156 Read More

PHALAENOPSIS: Cut Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They vary in thier lasting qualities because some stems do not take up water from a vase. A87-1037 Read More

PHALAENOPSIS: Repotting Frequency

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Should be done every two years; use deep enough pots, set plants well down and periodically add bark as new roots appear; this way is good for three years. A67-713 Read More

PHALAENOPSIS: Shaded Yellow and Green

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago If yellowing of leaves occurs on an unshaded leaf it is likely caused by too much light, if it appears overall, it could be low nitrogen or low nutrition that is causing it. A85-332 Read More

PHALAENOPSIS: Spots on Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Clear, translucent pale yellow spots are poss- ibly bacterial disease; spray with Physan 20. A78-998; spray with Tersan 75 at 1/4 teaspoon to 75 quarts of water. A69-902 Read More

PHALAENOPSIS: Growth Affected by Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Plants grow faster if the flower spikes are removed to divert development. A75-803Plants grow faster if the spikes are removed to divert development. A85-1435 Read More