Newly Posted Articles

FERTILIZERS: For Low, Average or Good Light Conditions

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Peters' fertilizer bags have a table showing that in low light 1/4 tpg is recommended for growth; in medium light 1/2 tpg., and in good light 1 tpg. which is of seasonal importance. Peters. Read More

FERTILIZERS: Mix of Bone Meal, Superphosphate, Cottonseed Meal, Blood Meal, Guano and Potash for Top Dressing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can be used but it has no advantage over others but lots of risk especially from the potash and blood meal. RMH Read More

PENICILLIN THOMII: A Fungus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Responsible for leaf blotch rot on paphiopedilums; the blotches are 1.5 in. across, rounded or elongated, watery, deep brown, marginated by paler brown; has a predilection for older leaves. OD65-11 Read More

PENTA PRESERVATIVE: Effect on Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some wood preserva tives give off harmful fumes if used in an enclosed space; Penta is not recommended for greenhouse use. A85-1233 Read More

PERFUMES: At Night Time

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago During darkness essential oils are made by plants and released even when the hours of darkness are extended to 50; the flower only detects the absence of daylight. A78-510 Read More

VOLCANIC ROCK: For Paphiopedilum Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It does two things, it holds moisture, and after the mixes break down it keeps the mix open and apart. A77-710; used for all types of plants; up to 75% of the mix can be volcanic rock; a profession... Read More

VUYLSTEKEARAS: Flower Deformity in

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The sepals sometime are joined; it appears to be a growth weakness; fairly frequently seen. OR80-207 Read More

WALNUT SHELLS: The Hulls as Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is used as an additive or a replacement for perlite or bark and it has been suitable by some growers. OA82-8 Read More

WATER (GENERAL): Alkaline From a Well

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If your water tests 470 prpm soluble minerals, you will gradually kill all your plants; "softened" water is worse; the pH can be tested with kits available from tropical fish stores, or with test t... Read More

WATER (GENERAL): Alkaline From Well

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago So long as there are no excessive salts content, it can range from a pH of 4 to 9, but water with a high calcium content should be kept off the leaves. A83-816 Read More