Category: Orchid Doctor

SOOT AND LIME: Used to Produce Ammoniacal Vapor

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In the 19th century in Europe, soot and lime were mixed dry to produce atmospheric ammoniacal vapor in the greenhouse; ammonia in solution could also be used being spread over the floor; for nitrog... Read More

SOOTY BLOTCH: Gloeodes Pomigena

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A sooty coating on tops or bottoms of leaves and on pseudobulbs in Florida; it grows superficially, is dull black to gray; prevalent in cool, shady areas; wipe off with damp cloth. B32; BU35 Read More

SOPHRONITIS COCCINEA: Hereditary Influences

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In breeding it has many dominant traits; refer to A60-15 Read More

SOPHRONITIS COCCINEA: Its Hereditary Influences

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In breeding it imparts many dominant traits; refer to A60-15 Read More

SOPHRONITIS COCCINEA: Problem Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cultural direction: grow it on osmunda or sphagnum moss and fine tree-fern; give it high humidity and keep it growing; keep the potting medium moist but well drained; give it half shade in cattleya... Read More

SOPHRONITIS: A Problem Genus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Re-establishing newly received plants is best done by placing them in a cool, moist well-shaded location; after rooting give fairly good light. A64-872 Read More

SOUTH AMERICA: Plants From

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They make the hemispheric adjustment to a northern clime automatically in about 18 months, though some will be programmed for Brazilian flowering when imported. A82-1259 Read More

SOUTHERN BLIGHT: Sclerotium Rolfsii

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It frequently attacks orchids and is commonly known as Crown rot; it is widespread in warmer areas; a rapid collapse and rotting of roots, pseudobulbs, lower parts of leaves which show cream-yellow... Read More

SOUTHERN BLIGHT: Sclerotium Rolfsii, Etc.

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Crown rot may be rare in places but can be devastating; especially in phalaenopsis and cymbidiums; the fungus rots the pseudobulbs and the bases of the leaves; watery, creamy yellow, changes to sof... Read More

SOUTHERN BLIGHT: Sclerotium Rolfsii, Pellicularia Sp.

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Crown rot; infrequent but devastating especially in warmer parts of the world; attacks roots, pseudobulbs, lower part of leaves; control: sterilize pots and media with 4% formalin; dip plants in Na... Read More