Newly Posted Articles

CYMBIDIUMS: Culture to Induce Spiking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago "full-sun" treatment can be successful; give as much sun as possible in the summer including risk of sunburn and with more water and fertilizer, OD68-244The day-night temperature change must be 20 ... Read More

PLANTVAX 75W: A Fungicide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Used for control of rust fungi. AH15 Read More

SALEP: History and Use

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a detailed and sometimes romantic account of the wide-sprung spread of this product, with many references, refer to OBIII-112; modern use in Turkey, see A88-281 Read More

SHADING, GREENHOUSE: Formula

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flaked off well in the fall: 1 lb. white lead (now withdrawn from the market?), 2 oz. linseed oil, 1 gal. mineral spirits. A75-618 Read More

SAND: Added to Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It caused Paphiopedilum callosum to "explode" with new growth; mix not specified. A75-962 Read More

SAND: In Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Beach sand can be used if it is more than normally coarse and does not obstruct water flow through the pot; Monterey washed sand comes in various sizes in bags from cement companies; it also can be... Read More

SAND: Used for Community Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Masonry brick sand, as fine, pure sand as possible was used; sand culture produces greater growth with abundant but shorter roots. A74-713 Read More

FILTERS: Used Furnace Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Mount them on the back of fans to rid the air in greenhouses of some particles, bacteria and spores; clean or replace when dirty. OIE85Sept-5 Read More

FIRE: Effect on Some Terrestrial Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some are seen only after a field fire, some are seen better after one, such as, in South Africa, Disa racemosa, Satyridium rostratum, Evota bicolor, a sp. of Pterostylis, Diuris, Prasophyllum, Lype... Read More

PUMICE: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A light, spongy stone thrown up by volcanoes. A75-712; RMH Read More