Category: Orchid Doctor

PECTEILIS RADIATA: Habenaria; "white Heron" of Japanese Origin

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cultural data = rest the tuber in dry earth for four months until the surface bud starts, then repot; it flowers in four months; 2 months later it dies back; tend it carefully and fertilize it mode... Read More

PELORIA: A Study

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The reversion of the lip to the petal form is rare but the reversion of the petal to the lip is frequent; reasons for this given,and examples with photos supplied; breeding, correct terminology, et... Read More

PELORIA: In Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use of deformed clones in hybridizing to obtain unusual petal markings or forms; refer to A83-722; F84-180; in cattleyas, refer to F84-235 Read More

PELORIA: Its Occurrence

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can result as an upset in the developmental process, but also it is genetically determined; some forms are seemingly set- are regularly produced and constant in expression; probably ultimately i... Read More

PELORIA: Mutations in Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Lip-like characteristics in the petals are considered an abnormal regularity in normally irregular flowers, as in splash-petal cattleyas; causes are uncertain; may lead to advancement in breeding b... 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

PENTA PRESERVATIVE: Treatment for Greenhouse Wood

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Boards treated 18 months before lose their toxicity to plants; the pentachlorophenol fumes can be sealed in by painting with boiled linseed oil, plus aluminum paint for looks. A72-341; Penta preser... Read More

PENTAC: A Wettable Powder Form

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One of the safest pesticides, it may be mixed with one part Kelthane to two parts Pentac; effective particularly on mites. A82-352 Read More

PENTAC: Miticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It has few if any bad effects on plants and is relatively benign to people; use it once a week; it has a shelf-life of only about one year. OIE86Jan-17Mode of action: it attacks the neuro-muscular ... Read More