Newly Posted Articles

COLLAR ROT: Orchid Wilt

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago A fungus Sclerotium rolfsii affects many orchids especially cymbidiums and phalaenopsis; the stem base turns light yellow then dark brown and spreads to roots and leaves; it thrives above 85 deg.F.... Read More

CLEANSER: Instead of Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago In Brazil Cleanser 409 can be sprayed on aphids with effect if insecticides must be avoided. OD87-146 Read More

EARWIGS: Harmful to Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Are of minor importance and can be controlled with normal insecticide sprays. A87-33 Read More

EDEMA: Blisters or Cracking

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Caused by the plant drying out and suddenly then getting more water than it can absorb, guard cells swell and rupture, leaving little scars; use a very light mix and water oftener. OIE85My-5 Read More

ERWINIA CYPREPEDII: Rot in Paphiopedilums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Also Pseudomonas cyprlpedii, can be cured by soaking the plants in Natriphene or Benlate at stated rates after all the rot has been excised with a sharp knife. OD86-168Brown areas at the base of le... Read More

ENDANGERED SPECIES: Legislation and the Facts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Anomalies and contradictions in the CITES convention to protect animal and plant species; refer to A83-15 Read More

APHIDS: Description and Activity

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago No controls given, refer to AH86-56 Read More

LAELIAS: Rupiculous Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Leaves should have a red tinge by being exposed to very bright light; they grow on mountain tops on rocks in full sun in winter and slight shade in summer; they need good air circulation; nightly d... Read More

CHYSIS: Broad Leaves Have Infection with Tan Moist Lesions

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago The lesions are not controlled by Natriphene or Physan; use Benlate 1 ttpg. as drench over everything; or, Banrot 2 ttpg. in same way. A76-206 Read More

JEYES FLUID: Disinfectant

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 10 years ago Registered for soil conditioning in the U.K. it is used as a spray against such orchid pests as black spot, red spider mite; is useful for eliminating slugs and snails; has been tested on cymbidium... Read More