Category: Orchid Doctor

VIRUS: Transmission

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Mechanical, insect and pollen agency, their numbers are uncounted; refer to AH86-11; transmission by pollen does not occur in cymbidiums but has been noted in dendrobiums and phalaenopsis. AH86-12 Read More

VIRUS-LIKE SYMPTOMS: Causes

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Nutritional or chemical disorders, other insect damage produce them; there is an apparent color-break in vandaa: caused by thrips; distorted cymbidium blooms are attributed to feeding of aphids on ... Read More

VITAMIN B: Sources

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A Stress Tab (B complex vitamin) can be dissolved in one gallon of water; or Superthrive can be used. OIE85Sept-6 Read More

VITAMINS: As Additive in Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Circumstances make the rules invalid; test before making large applications; some other less pertinent suggestions made. F85-8 Read More

VITAMINS: As Plant Growth Substances

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A brief review of some, such as thiamine, niacin, biotin, ascorbic acid, yeast; refer to OA83-52; refer also to OBIII-201; OBII-269, etc. Read More

VITAMINS: Useful to Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Fungi provide niacin (nicotinic acid) which enhances the growth of seedlings; folic acid (a water-soluble vitamin) and thiamine (vitamin B/l) also stimulate growth; four combinations cited; refer t... Read More

VOLCANIC CINDERS: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Popular in Hawaii; a godsend to some; dry, epiphytic species love it; wet rain-forest plants do not take to it as well; the rougher the cinders the more water is absorbed and the better the plants ... Read More

VOLCANIC ROCK: For Paphiopedilum Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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

VOLCK OIL SPRAY: As a Spreader-sticker for Sprays

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Do not use it; use DuPont wetter-sticker, or Rohm & Haas spreader-sticker No.1956, or General Chemical Phylac, or some other. A74-300 Read More

VUYLSTEKEARAS: Flower Deformity in

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The sepals sometime are joined; it appears to be a growth weakness; fairly frequently seen. OR80-207 Read More