Category: Orchid Doctor

PHALAENOPSIS: Temperature Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A winter night temperature of 58 dF is lower than usually recommended for them, but in a mixed collection a lower temperature will help other genera such as cattleyas to bloom, so slight alteration... Read More

PHALAENOPSIS: Temperatures Day and Night

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Optimal data gathered from controlled experiments showed that 68 nights and the same for the days, 68 deg, F. was optimal; others were: Cattleya trianae, 58 to 68 nights to 63 to 86 days; Cymbidium... Read More

PHALAENOPSIS: Temperatures for Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is induced by a period of cool nights at about 50 to 55 deg.F. A78-812; A78-998; from 55 to 60 deg. F. is advised. F74-68 Read More

PHALAENOPSIS: Temperatures Required to Induce Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Drop the temperature to 55 deg.F. for two weeks in August and September. A69-902 Read More

PHALAENOPSIS: To Flower Them

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Give them 55 to 58 dF at night for three full weeks, also an increase in light of 25% (to 1250fc. ), with more air circulation to cool the leaves. A88-155 Read More

PHALAENOPSIS: Under Lights, What Fertilizer Is Best?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A formulation of 30-10-10 for bark is best; use at 1/2 tpg. and spray every two to four weeks, depending on the intensity of the lights. A74-114 Read More

PHALAENOPSIS: With Small Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can be caused by root loss due to salt buildup, or genetic limitations, may cause stunted growth; repotting in a fresh mix and watering more seems to be called for. A87-1174 Read More

PHALTAN: Toxicity Reactions in Humans

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago LD-50 of 10,000; slight.A68-583; OWD Read More

PHENOTYPE: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago How the flower appears to the eye. NH78(l)-9 Read More

PHOSPHATE: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It determines the new, lush green growth and the formation of seed; it tolerates a pH between 6 and 7.5 only: at pH 6 the growth is leggy, weak, harrow and breaks easily, leaves do not hold up; abo... Read More