Newly Posted Articles

TOBACCO: Smoking

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Smoke from a cigarette cannot transmit virus, the question is whether contact of the hand to cigarette tobacco then back to plant transmits live virus. A67-234 Read More

TOBACCO: Smoking in the Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Avoid discarding cigarette butts because they carry Tobacco Mosaic Virus which infects orchids. OD67-50 Read More

TODEA: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago A fern of the osmunda family; in Australia it was a good medium if handled properly; used before the advent of barks, etc. AU79-198 Read More

TODEA: Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago A fern native to New Zealand, identical in appearance to osmunda; it is now protected. A75-713 Read More

TORCHES, GAS: For Steriliz Ing Ins Truments

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Several kinds are on the market which are self-igniting on pressing a button which starts the flame, like a cigarette lighter; they are convenient and save fuel. OIE86Jy-6; -87Non-17 Read More

PLANT HEALTH SYSTEMS: Significance

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago If plant cells are damaged by pathogens and if air is present, the phenolic compounds in these cells form products toxic to the pathogens; refer to AU78-93 and following Read More

MOSS, FERN: An Excellent Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Thuidium delicatulum grows mostly on half-rotted trees and logs on the forest floor in sizeable sheets; after three years experiment with it only paphiopedilum didn't: grow well on it because it wa... Read More

HAWAIIAN BAMBOO ORCHID: Arundina Graminifolia Syn. A. Bambusifolia

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 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

CATTLEYAS: Leaves as Indicators

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Avoid plants with red color unless all the seedlings show red; avoid pleated or irregular leaves. ODA78(l)23 Read More

CATTLEYAS: Leaves with Hooks on Their Ends

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago A pronounced hook to the leaf indicates an award-potential plant; also the lower third of the leaf will be the widest. ODA78(l)23 Read More