Category: Orchid Doctor

HABITATS: Rain Forest or Cloud Forest

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The lack of precise definition of these terms; the preferred definitions for conditions in Venzuela stated; their importance and significance as orchid growing areas; sources for specific types; re... Read More

HAIL DAMAGE: To Plants Growing Outside

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Pitted foliage changes it to an unsightly problem; the only remedy is to cut off the damaged parts as long as the health of the plant is not set back too much; spray the cut areas with Benlate at l... Read More

HAIL PROTECTION: Of Glass-covered Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Possibilities are: frames of lath shading (three-quarters inch wood strips one-half to one inch apart) can be placed above the glass in spring, and can be removed in fall; or frames of hardwood clo... Read More

HAIR: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Collect a bagful at the men's barber shop (women's hair is too frequently treated with unsuitable chemicals) mix it with sphagnum moss and some per lite, charcoal and maybe some crushed shell, for ... Read More

HAPLOID: Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The unit into which a cell splits on mitosis to unite with another such unit to form a new individual. AU78-47 Read More

HAPUU: Tree Fern From Hawaii

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Recommended by a user of twenty years; description, characteristics, illustrations; refer to A64-784+ see also Tree-fern, Hawaiian Read More

HAWAIIAN BAMBOO ORCHID: Arundina Graminifolia Syn. A. Bambusifolia

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Its culture; usually grown outside in rich loam plus leaf mold and bark in full sun, well watered; not easily flowered in pots in greenhouses. A76-795; A. arminifolia; for potting mix refer to A80-630 Read More

HEART ROT: Caused by a Species of Phytophora

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It especially affects phalaenopsis and vandas; begins on a leaf and spreads to the stems; cut off infected areas early; soak plant in Anti-Damp then treat with Tersan. A73-813 Read More

HEART ROT: In Paphiopedilums Caused by Erwinia Cypripedii

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It can start as small brown spot on a leaf; spreads to crown; cut out at once; soak plant in Anti-Damp or Natriphene; let it dry, swab with Tersan. A73-815 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