Newly Posted Articles

CULTURE: When in Doubt

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Any epiphytic but unknown plant is best grown on a horizontal piece of cork oak bark with some moss festooned at the roots; any terrestrial plant is best placed in live sphagnum moss and kept moist... Read More

CUT SURFACES: Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To prevent bacteria from entering plant tissues use powdered sulfur or a paste made with a fungicide. OIE85Nov-19 Read More

CUTWORMS: Climbing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 1" long, grey with dark edging; they eat tips of buds, leaves, flowers; find them at night; drench with Sevin WP. Irene Kothuber Read More

CYMBIDIUM MOSAIC VIRUS: Description

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Lesions are always elongated, sometimes streak-like, are often whitish for a month or two before turning brown-grey or black and are usually slightly sunken. A82-37; place cutting tools, etc., in t... Read More

CYMBIDIUM MOSAIC VIRUS: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Produces more necrotic symptoms than in cymbidiums; dark brown or black sunken rings or streaks which tend to coalesce darkening the whole leaf; the symptoms generally are more pronounced on the up... Read More

RAINWATER: Recycled

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Strongly advise riot using re-used water even after treating it with Physan or other pesticide because problems are spread by it to other plants. A73-503 Read More

FERTILIZERS: Applied to Pots Containing Various Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago If 30-10-10 is used it can be applied to bark mixes and tree fern mixes generally. A69-793 Read More

CYMBIDIUM MOSAIC VIRUS: Symptoms and Spread

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Leaf mosaic, chlorosis, streaks or necrotic spots are visual in nature but in many plants no foliage symptoms appear; the number and size of flowers are reduced; there is no color-breaking in cymbi... Read More

VAPOR BARRIERS: Paints to Apply to Concrete Blocks

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are asphalt-based and rubber-based and are satisfactory, but damp walls in a greenhouse are beneficial in maintaining humidity so why use them? A66-927 Read More

CYMBIDIUMS: 6n Polyploids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago New development with potential is the use of 6n crossed with diploids (2n) to produce tetraploids (4n); 6n plants were produced by treating triploids (3n) with colchicine; desirable features of 2n ... Read More