Newly Posted Articles

RUSTS: Uredo Epidendri

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Infrequently found in Florida on Oncid. cavendishianum; shows raised brown pustules with reddish border, first on the underside of leaves; destroy all plants showing infection; protectively spray o... Read More

RUTGERS MIX: As Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The 7-1-1-1 ratio is used by 16% of U.S. commercial growers: 7 parts fir bark; i part coarse peat moss, 1 part Palco redwood wool, 1 part coarse perlite; the Off alteration on this has a lower pH. ... Read More

BACTERIAL LEAF ROT: Erwinia Chrysanthemi a Bacillus

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Hawaii; leaf rot in various orchids; water-soaked and yellow spots; preventive spray of Natriphene before wet weather and during recommended. N321 Read More

MITES (GENERAL): Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In Hawaii, use chlorobenzilate, Diazinon, Kelthane, wettable sulfur (3 tablespoons of 95% in one gal. water, spray 5 to 7 days apart), Tedion, Aramite, Dimite. P67(2)19; P69(l)13 Read More

MITES (GENERAL): Cymbidium Spray Control

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Spray with miticide any new plant added to the collection; spray them all in early summer and then again in the fall. OA78-167 Read More

DRENCH: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago To immerse the pot and plant in a liquid. RMH Read More

CYMBIDIUMS: Culture to Induce Spiking

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

FERTILIZING: Programme Recommended

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Monthly: one pound to 100 gals. water, or fortnightly 1/2 pound to 100 gals. of water; or 1/4 pound if applied weekly; tree fern, osmunda, so lite, holite and terrestrial mixtures require 10-10-10 ... Read More

FERTILIZING: Using a Plastic Drum for Holding

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A 200 litre size container with piping, a valve, filter and pump to dispense premixed Aquasbl feed; refer to AU86(2)-19 Read More

PUMICE: Definition

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A light, spongy stone thrown up by volcanoes. A75-712; RMH Read More