Category: Orchid Doctor

BARK, COARSE: Watering Frequency for Potted Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago More frequent watering is required to prevent shrivelling; better to water twice the same morning. A70-148 Read More

BARK, COMPOSTED: For Cymbidium Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago I.C.I, composted forest bark (50% with medium fir bark) is made from bark skinned from logs at pulp mills and composted. Orchid advocate, vol.5, no.5, 1979, p.166. Read More

BARK, FINE: Finer Than Seedling Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago So fine it is sometimes called "coffee grounds" because of its appearance; should not be confused with fine seedling bark which is more commonly used. A71-310 Read More

BARK, FIR: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is the most-used potting media in the U.S description, advantages, peculiarities, statistics of usage; refer to A86-492Osmunda retains 110 to 140 times more nutrients than bark; after one flushi... Read More

BARK, FIR: Sterilization

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It can be steam sterilized but that will hydrolize complex carbon compounds and increase its decay; no serious diseases or insects are introduced by it. A66-55 Read More

BARK, PINE: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A good common denominator bark for most pot- ting in spite of adverse publicity; does not contain turpentine or some other noxious ingredients. A87-1039It has been used, but is not as popular as fi... Read More

BARK, PINE: Potting Medium for Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It should be thick and free of pitch; it is dried, then ground into pieces one-quarter inch by three-quarter inch; can be used by itself or with peat moss, perlite, or redwood fiber. A72-412 Read More

BARK, PINE: Research in Australia

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Used in potting mixes; as substitute for peat moss; advantages and disadvantages given; treatment for toxins is to compost it moist for eight weeks; suggested mixes: 2 pts bark, 1 pt. brown coal, c... Read More

BARK, PINE: Species and Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is hard, gritty, slow to break down because of the high resin content; sponge-like, holds water without getting water-logged; depends on which conifer is used and the age of the tree; Pinus mari... Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More