Newly Posted Articles

CYMBIDIUMS: Root Injury in Potting

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Nearly every root more than two inches gets broken in repotting; this has little effect on the plant's ability to grow and bloom on time. A64-583 Read More

POWER FAILURE: How to Cope in Summer

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In Southern California, in case of an emergency, be prepared with heatless motor vent controls (non-electric), a thermal chimney eight ft. by 1 foot square, water-sprinklers on the greenhouse roof ... Read More

PREDATORS: In the Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A mealybug predator called Cryptolaemus montrouzieri ordered in lots of 100, in four days reduced a heavy mealybug infestation, but the predators' numbers were reduced drastically by some unknown c... Read More

DENDROBIUM PHALAENOPSIS: Buds Dry and Fall Off

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago May be caused by ethylene. A79-262 Read More

DENDROBIUM PHALAENOPSIS: Hit by Cold Spell

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Remove all discolored canes and rhizomes; repot and water sparingly until new roots reach pot edge. F70-182 Read More

THRIPS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Spray the young spikes preventively with Sevin 50W (Carbaryl Insecticide) in its wettable powder form; when the flowers open spray with Black Leaf 40 (nicotine sulfate); some growers use Orthene 75... Read More

DRIP: From Greenhouse Roof, Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use "Sun Clear" for the inside of plastic roofing, it causes running without dripping. A76-403 Read More

EARTHWORMS: In Potting Media

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Control with a drench of insecticide; Zectran is a wide-range insecticide which also controls slugs and snails; malathion is effective against worms and millipedes when used as a drench. C71-199 Read More

COLOR BREAK, SYMMETRICAL: In Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Dark pigment outlines sepals and covers all but the median area of the petals; it is a virus. N322 Read More

CYMBIDIUMS: Culture Basics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The modern expertise, in some detail: Light, temperature, watering, humidity, fertilizing, repotting, mixes, diseases, and other important aspects, refer to A85-697; 841 Water weekly, never let ... Read More