Newly Posted Articles

PHOSPHATE: Characteristics

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

PHOSPHATE: Properties

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It plays a complex role; forms many insoluble and slightly soluble compounds; their solubility is affected and altered by the pH of the media reaction; under conditions of slight to moderate acidit... Read More

PHOSPHORIC ACID: Salts Remover

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Add it to water to remove salts from the potting medium; water alone can do this quite well as six inches of water will leach out about 50% of the salts in the pot; in regions where the water conta... Read More

PHOSPHORUS: Function in a Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It helps to make the plant flower; if a cymbidium has a low percentage in its tissue on chemical examination, few flowers will be produced. AU87(1)-12 Read More

BARK: Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A typical mixture would have about 15 parts medium bark, 1-1/2 parts coarse Perlite, 174 part charcoal chips (quarter-inch size). OR87-173For cymbidiums in a high humidity area near the ocean in Ca... Read More

PHALAENOPSIS: Under Lights, What Fertilizer Is Best?

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

PHOTOPERIODISM: Hours of Complete Darkness Needed by Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago There is no generally recognized rule-of-thumb; in general 12 to 15 hours tend to favor flowering; eight to nine hours tend to stimulate vegetative growth; some summer-flowering cattleyas fall betw... Read More

PHOTOSYNTHESIS: New Growths Stretch Towards the Window

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To keep plants grow ing upright when they are some distance from the light source rotate them one-quarter turn every two weeks; install Lazy Susans? A83-698 Read More

BRICKS, BROKEN: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Obtained from house construction; plants do well in suitably sized mixes; under hot light top off the brick in the pot with a layer of bark, AU79-199 Read More

OUTDOORS GROWING: In Miami Area

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago "grow or go" applies to orchids of minor importance in a large garden; plants are attached especially to oak trees on the east side at a point where water sprinklers hit a window-screener pouch wit... Read More