Newly Posted Articles

OSMUNDA: Chemical Analysis (typical)

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Moisture 12%, pH 4.3; ash 5.5%, nitrogen forms 0.14%, phosphorous 0.06%, potassium 0.57%, calcium 0.4%, magnesium 0.3%, sulfur 0.16% and silica 3.0%. A65-832 Read More

ONCIDIUMS: Watering

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many oncidiums dislike heavy watering; they need a decided reduction except when in full growth. OR75-209On repotting the mix should be open and only a sniffle of water applied, no more is necessar... Read More

HYBRIDIZING: Species

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Species kept too long in captivity become poor breeders. ODA76(4)-26 Read More

PAPHIOPEDILUMS (MOTTLED LEAVES): Problem Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago How to grow them: they need heavy shade, especially around early springtime; high temperatures can check their growth; lots of air movement is necessaary all year round and yet high humidity must b... Read More

TERRARIUMS: "three Dimensional"

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use of tree-fern and osmunda to provide different levels for growing; their characteristics; a list of about 30 miniatures suitable for growing is given; refer to A76-136+ Read More

TERRARIUMS: Compost

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For paphiopedilums to be nearly self-sustaining use a mix of flaked oak leaf mold and/or chopped osmunda, with bark; could add a little very coarse sand, some Turface, perlite or sphagnum. A75-618 Read More

GREEN POD CULTURE: Time to Remove

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Wait till the flower end starts to turn yellow; aspasias, brassias and odontoglossums are long in ripening, up to ten months; many pods are lost because pods are removed too soon. OD77-101 Read More

OUTDOORS GROWING: List of Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago These are recommended: cymbidiums, dendrobiums, coelogynes, bifrenarias, odontoglossums, masdevallias, stanhopeas, pleiones, laelias, vandas (strap-leaf and terete),, OD87-59 Read More

LAVA ROCK: In Cymbidium Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is too porous alone and in a high humidity situation it would retain too much water. OA82-6 Read More

THRIPS: Characteristics and Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago There are both winged and wingless phases; they scrape the surface tissue of plant parts especially flowers, causing shallow, silvery scars; they are fast moving and hard to see; spray with Malathi... Read More