Category: Orchid Doctor

MINERAL DEFICIENCIES: Caused by Shortages in Mixes or Feeds

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a list of 13 elements and notes on what happens when they are deficient, refer to OBIV-312 Read More

MINIATURES: Cattleya Seedlings

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The lack of growth is attributed to the habit of them producing new growth only in springtime, but check for possible root injury or cultural mis-practice. A83-266 Read More

MINIATURES: Cattleya Types

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Handsome without being overwhelming; their appeal, cultural requirements, hybrid combinations, the micro-minis; a true miniature from five to 10 inches high; maxi-minis or compacts, characteristics... Read More

MINIATURES: For Window Growing or Under Lights

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A selection of dozens of plants with cultural notes for central Canada conditions. Ca82(7)-23 Read More

MISTING: To Provide Humidity to Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The effects last only about half an hour. A75-1090 Read More

MITES (GENERAL): Characteristics and Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago During egg stage and three chrysalis stages they are relatively immune to pesticides, especially to organic phosphates (Malathion,etc.); mites develop resistance to one pesticide which makes relate... Read More

MITES (GENERAL): Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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): Controls, in Increasing Degrees of Toxicity to the User

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Chlorobenzilate (6oz. required for LD-50) aramite (4oz.) kelthane and dimite (loz. the most lethal);Ethion (too toxic at 1/2 oz.) and Demeton (extremely toxic at 8 drops) are not recommended. A68-5... Read More

MITES (GENERAL): Cymbidium Spray Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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

MITES (GENERAL): Finding Them

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Look initially for silvery damage under the leaf where the cell juices have been sucked out, in patches or in a general area; compare a new leaf with an old one; use a hand lens to be certain. OA71... Read More