Category: Orchid Doctor

BEST PLANTS: Quality Awarded Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Those with 20 or more quality awards throughout AOS judging history number 79; those with 40 or more awards number 21; for the names on these aristocratic lists refer to AA86-208 Read More

BEST PLANTS: Ten Most Liked in Tampa

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Laelia anceps (four clones), Encyclia vitellina, Stanhopea tigrina, One, microchilum, Gongora galeata, One. morenoi, Bepi. Gordon Vickers, Barkeria scandens. OIE86Jy-8 Read More

BIOLOGICAL CONTROLS: Of Two-spotted Spider Mites

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The combination of chemicals and predators to control pests is known as Integrated Pest Management; Phytoseilus persimilis is a voracious predator on mites; plus a list of 12 chemicals used for con... Read More

BIOLOGICAL CONTROLS: Produced in Plants Against Certain Agents of Attack

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Controls of fungal mycelium in germination and growth; the waxy coating on leaves and bulbs includes deterrent chemicals of protection. OR78-177 Read More

BLACK FLY: Common in Greenhouses

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Thrives in wet soil or media; tiny white larvae dwell in media; adults flutter up when disturbed; do no damage; (leave excreta balls on foliage); a nuisance; control with malathion. N329 Read More

BLACK MOLD: On Dendrobiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Probably arises from the punctures made by aphids; eliminate them with Piramor at 3 grams to 2 gallons of water, or with Malathion at ltpg. plus 1/2 teaspoon of a wetting agent, or 10 drops of dish... Read More

BLACK ORCHID: Which One Is It?

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago There is no black orchid; flowers of Coelogyne pandurata have black blotches and veins only, but it is called "black". A65-832 Read More

BLACK ROT: Caused by Fungi Pythium ultimum and Phytophora cactorum

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Most destructive to cattleya-types; worst during cool months; purplish brown area on leaf or root and rhizome and upward into pseudobulbs; drench with Truban 1/2 tpg. AH16 Read More

BLACK ROT: Fungicide as Preventive

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Dexon-35 can be so used; also, Truban; packages are commercial size, try to obtain from a commercial grower. A74-896 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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