Category: Culture

WATER (GENERAL): Fluoridated Water

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago No effect from it has been noticed in culture; A62-485; it is not detrimental; A70-725 Read More

WATER (GENERAL): For Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago PH of 7.9 is within a good range providing there are no soluble salts and toxic ions such as sodium and bicarbonate; citric acid of food grade phosphoric acid; in Santa Barbara, Cal., one quart of ... Read More

WATER (GENERAL): Leaching Effect

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago When pots are leached with water more nitrogen than phosphorous or potassium is leached out. A73-991 Read More

WATER (GENERAL): Sulfur in the Water

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If sulfurous well water is used for drinking it is not likely to harm plants; it has a high pH value, so potting medias other than bark will prove more satisfactory. A65-1003 Read More

WATER (GENERAL): Testing for Water Content in Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago An electronic moisture meter (M-Scape Moisture Comparator) is useful to determine whether there is water in the root zone. OD65-172 Read More

WATER (GENERAL): Well Water

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Is it too alkaline with a pH of 8?; the total salt content should be determined to see if the pH is significant and warrants treatment;for acidifying it is better to use nitric acid or nitric combi... Read More

WATER, HARD: Causes Calcium Deposits on Cattleya Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The acidification of water from the hose gradually dissolves the deposits; see method described, A69-126; A71-609 Read More

WATER, HARD: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The critical factor is the soluble salt content; over 150 ppm. of calcium carbonate (CaCo/3) is hard, soap does not produce good lather; waters with less than 125 ppm. are excellent; up to 500 ppm.... Read More

WATER, HARD: De-ionized Water for Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a few small plants one can buy the kind of water sold for steam irons in areas where the local water has a high sodium content. OD79-53 Read More

WATER, HARD: Deposits on Tree-fern Rafts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To dissolve these use a little nitric acid at pH of 4.0 to 4.5; add a few drops of dilute nitric acid to a plastic bucket of water and soak the rafts for 1/2 hour. A75-680 Read More