Category: Culture

PH OF WATER: Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago A satisfactory analysis for Somerville,N.J. is a pH of 7.2; it has a water supply like most of N.J.; some supplies are high in soluble salts; 8.4 in North Brunswick,N.J. is good despite the high pH... Read More

PH (GENERAL): Potting Media

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago Acidity, alkalinity and orchids: the definition of pH; the pH scale; pH and orchids; control of pH, etc.jrefer to AU80-37+Test for pH using litmus paper: soak several tablespoons of the media from ... Read More

HEATING: Costs and How to Reduce Them

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago Adopt partial underground construction of greenhouses, lots of insulation, a southern exposure, double glazing with plastic film, airtightness, the installation of passive heat storers (steel drums... Read More

BARK, PINE: Potting Medium for Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago It should be thick and free of pitch; it is dried, then ground into pieces one-quarter inch by three-quarter inch; can be used by itself or with peat moss, perlite, or redwood fiber. A72-412 Read More

HEATING CABLES: Use for

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago Try growing mature Doritaenopsis and Phalaenopsis in the greenhouse on one for better performance; it should be linked to a thermostat control. OIE85Jy-15; RMH Read More

LIME: In Bark Media

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago Lack of it in bark leads to greater acidity in the mix; it is a common almost universal practice (1) to add lime to bark potting mixes; can be added as dolomite to the surface of the pot mix, or gr... Read More

OVERCROWDING: Defined

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago If pots are closer together than the diameter of one of the pots, they are overcrowded and deprived of light, air circulation which constitute the mos t common form of cultural "suicide". AU79-37 Read More

LIMESTONE: Added to Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago For a mix of fir bark and redwood bark add 1/2 pound of pulverized high magnesium limestone to each cubic foot. A64-591; A75-437; this procedure not considered necessary, as the pH of the fir bark ... Read More

LIME: Application to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago A common mineral deficiency is calcium which is usually lacking in commercial fertilizers; it is sometimes supplied by means of limestone or dolomite, whose usual alkalinity is partially offset in ... Read More

DAY LENGTH: Increased by Artificial Light

Author is Robert M. [Bert] Hamilton (Compiler), posted about 7 years ago Cattleyas may not flower with too much light, under lights and with kitchen lights on full. A86-1031Fall flowering cattleyas most respond to light; increase the day length by turning on lights for ... Read More

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