Category: Orchid Doctor

MITES, FALSE SPIDER: Spraying with Kelthane as Control

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Believed to have stunted some phalaenopsis plants; two tpg. could not cause the injury; perhaps three tpg. might do so,but unlikely; cause not certain. A74-792 use liquid 1 tpg.or powder 1.5-2 ttpg... Read More

MITES, PHALAENOPSIS: Characteristics and Damage

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Tenuipalpas pacificus causes purplish discoloration to the bottom of leaves; the green fades and yellowing occurs; or first indication can be deep pits or sunken areas and slight olive-colored or r... Read More

MITES, RED SPIDER: Control in Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Also know as two-spotted mite; in cool weather the adults change to the "carmine form"; first signs come usually in spring; during winter they seek shelter; controls: space the plants well apart; s... Read More

MITES, RED SPIDER: Cymbidium's Worst Pest

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It produces small white spots on undersides of leaves, they spread from leaves to flowers; are less active outdoors; water sprays indoors only keep them down temporarily; they can increase in great... Read More

MITES, RED SPIDER: On Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Controls, etc.: for detailed instructions, cautions and recommendations, refer to A67-497+; OR74-228 Read More

MITES, RED SPIDER: Sprays or Fumigations

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Where there are lots of buds on cymbidiums it is better to fumigate to control the mites rather than spray, reason: possible damage to the buds. OR74-228 Read More

MITES, SPIDER: Also Called Red Spider Mites, or Two-spotted Mites

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are troublesome on thin-leaved genera such as cymbidiums and cycnoches; they cause fine stippling, white scars, or silvering, of undersides of leaves; on buds and flowers they puncture along t... Read More

MITES, SPIDER: On Thin-leaved Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Cymbidiums, cycnoches, lycastes are susceptible; spray with Pentac at 2 tpg. every six or eight weeks; or, spray with Kelthane 25%WP at 1.5 ttpg. monthly, until clean. A72-1081 Read More

MITES, SPIDER: Systemic Miticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago None is recommended for inside the home; use Kelthane at 1 to 1.5 ttpg. of the wettable powder form, or 1 to 1.5 tpg. of the liquid concentrate carefully; does not harm pets. A73-503 Read More

MITES, TWO-SPOTTED: Biological Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Predatory mites are available to combat them, in Australia two kinds are used called Typhlordromus occidentalis and Phytosemilus persimilis and are found in most cymbidium ranges. Au87(1)-13 Read More