Newly Posted Articles

FERTILIZERS: Established Facts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchids respond to added nutrients; slow growers get indigestion from too much; feed is best when they are growing. AU85(1)-37 Read More

FERTILIZERS: Fertilizers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Higher rate produces fewer flowers = for cattleyas a 1 tpg weekly produces only 1 flower on many vigorous plants; a change to 1 tpg. monthly should improve flowering. A84-699 Read More

FERTILIZERS: For Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In a nutrient solution growth of hybrid plants was optimal with lOO ppm. nitrogen, 50 to lOO ppm. potassium and 25 ppm. of magnesium. OA79-127 Read More

FERTILIZERS: For Flowering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Dendrobium nobile and its hybrids flowering is prolific if they are fed every three or four weeks while in active growth with low nitrogen and high phosphorous; from August to October feed 1/2 t... Read More

FERTILIZERS: Formulas, Their Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A 12-4-8 formula contains four times as much nutrients, in the same proportions, as a 3-1-2. A61-981 Read More

FERTILIZERS: Granular Ones Liquify in Container

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They can still be used; to avoid the condition arising store it in a dry place in a tightly capped container. A82-487 Read More

FERTILIZERS: High-analysis Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A 9-3-6 fertilizer contains only one-third the value contained in a 27-9-18 formulation; both have the same ratio and cost about the same. OD67-220 Read More

PHALAENOPSIS: Repotting Frequency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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 almost 8 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 almost 8 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