Newly Posted Articles

MOLD, SNOW: Vinegar Dip

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago This has been recommended as a way to "discourage" it: one part of cider vinegar is added to 20 parts of water as an acid solution as a drench. Fitch -- All about orchids. (1981)-219 Read More

MOLD, SOOTY: Appears on Leaves or Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It grows on exuded "honey", not on the tissue of the plant; fostered by high humidity; can be washed off, N319; S204 Read More

MOLD, SOOTY: Avoiding it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Best way to avoid its buid-up is to hose down the flower spikes in the bud stage; Benlate as a botrytis prevention is also good. C71-223 Read More

MOLD, SOOTY: Best Fungicide for it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Any common fungicide will control it; try Tersan, Captan or Ferbam; also called Sooty blotch. A67-517; AH30 Read More

CYMBIDIUMS: Cool Nights Are Required to Start Spikes

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A common belief, but it has not been proven; they spike in California in the hottest months of August, September and October; in Hawaii they spike at about 65 deg.F; it may be a contributing factor... Read More

SEED PODS: Harvesting

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Slight yellowing and the start of splitting at the seams indicate time for removal; swab with dilute Clorox (1:4 water) place between two clean pages of paper and let dry a few days; clean out the ... Read More

FLASKING: Improved Methods of Germination

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Sterile medium is achieved by decontaminating glassware with Physan 20 solution and adding .005% hydrogen peroxide into the medium just before pouring it into flasks; sterilize seed by soaking it 2... Read More

VIRUS: Research and Accomplishments

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A review; serology and prevention methods, etc.; refer to A82-1064; 1180; 1279 Read More

DAMAGE: Ascertaining Cause of Problems

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Look for it in accordance with this order: 1, Handling damage such as bruising, cracking, tearing, etc.; 2, Cultivation, such as water or light damage, overfeeding, heating, etc.; 3, Insect damage,... Read More

PSEUDOBULBS: Twisted Bulbs on Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago These can develop for no apparent reason, except that water lodging in immature growths may be the cause. A85-832 Read More