Category: Orchid Doctor

OVERPOTTING: Poor Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is conducive to poor aeration after watering; it is self-defeating as an aid to less watering, or as an aid to less frequent potting. F70-87 Read More

OVERWATERING: Kills Roots

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Roots are lost and bulbs shrivel; repot in small pot, after removal of some back bulbs, in sphagnum moss to induce starting of new roots; water sparingly. OR73-113 Read More

OXALIS: Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For oxalis growing rampant in the pots use Simazine SOW (Princep 80W) at three rounded ttpg.; keep the sprayer agitated, use only on pots more than five inches; the day before application water onl... Read More

OXALIS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Three materials have been used with success on potted plants: Monuron (Karmex-W, or Telvar), Diuron (Karmex DW) and Princeps-80W (Simazine-80W); directions should be followed carefully; water plant... Read More

OXYGEN: Lack of

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In cases of pot waterlogging it is probably the lack of oxygen which does the damage to the roots. OA82-6 Read More

OZONE: Pollutant Causes Crop Damage

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In California, and in Ontario, damage caused to field crops is large; a yellow-brown photo-chemical smog produced mostly by car emissions; presumably origin of ethylene which is most harmful to cer... Read More

PAINTS: Kinds to Avoid in the Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Those with a mercury or copper base should not be used because of their possible harmful effect. A87-53 Read More

PAINTS: Rust-preventing, on Heating Pipes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A non-toxic paint is an asphalt-base aluminum paint; address given. A75-803 Read More

PALCO WOOL: Characteristics

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Tends to reduce break-down in pots; is broken down rapidly itself by fertilization; if not changed every 12 to 18 months its decomposition will kill roots. OD69-63 Read More

PALCO WOOL: Shredded Redwood Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Used as an additive in potting mixes; tends to be acid. A76-775 Read More