Category: Orchid Doctor

BRASSAVOLA DIGBYANA: A Problem Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Should have same culture as cattleyas but it needs lots more light; do not keep wet and soggy; hang up high to get more light and heat. OR66-124; in Florida, grow in full sun. F71-137; for B.nodosa... Read More

BRASSOLAELIOCATTLEYAS: Flowers Last Only Eight Days, Why?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Temperatures day and night may be slightly off, 65 deg.F at night fall and winter is too high, and 70 to 75 deg.F. is below daytime optimum. A73-208 Read More

BREEDING: Elementary Genetics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Understanding the basis of inheritance; chromosomes, genes, gametes, DNA, etc., and how they affect hybridizing; refer to SA84Sept-lll Read More

BREEDING: The Most Important Point

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The variant used as the female parent has the greatest influence. NH78(1)13 Read More

BRICKS, BROKEN: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Obtained from house construction; plants do well in suitably sized mixes; under hot light top off the brick in the pot with a layer of bark, AU79-199 Read More

BROWN COAL: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Appearance is hard, solid pieces of peat, nearly brown coal in nature; keep their shape for some time, form an airy potting ball. A75-208 Read More

BROWN ROT: Erwinia cypripedii

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Attacks paphiopedilums; bacterial brown rot starts as small roundish water-soaked yellow spots often in the middle of the leaf; changes to dark chestnut; may appear greasy; reaches growing point of... Read More

BROWN ROT: In Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by the bacillus Erwinia cypripedii; starts as small chestnut brown spot on leaf; spreads to crown then to other leaves; spreads rapidly; plant can be saved by excision; soak for hours in Nat... Read More

BROWN SPOTS: Bacterial Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Pseudomonas cattleyae; affects many genera; starts as soft water-soaked lesion becomes brown or black; advances rapidly; kills seedlings; occurs on leaves of older plants; spreads to growing point;... Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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