Category: Ailments

BUD DROP: Causes Other Than Ethylene

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Fertilizer imbalance might cause it, or trace elements deficiency; root damage has caused bud drop, as has Read More

BUD DROP: If Pollution Is Not Present

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago This is hard to explain, except the possibility the plant is self-pruning to sustain the rest of the buds. A73-906 Read More

INSECTICIDES: In the Home

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Spray plants in the kitchen with Malathion which is as safe as any broad-spectrum insecticide can be; it is volatile and smells unpleasantly. A74-433Spray plants under lights in the basement with m... Read More

LEAF FALL: As An Indicator

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is no cause for concern as most plants shed leaves sooner or later in the natural course of events. A84-584It is usually natural; leaves fall from bulbs three or four years old; may be a cultura... Read More

ISOTOX: Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A systemic for mealybug reformulated about 1982; use with caution. A82-159 Read More

CYGON 2E: As a Regular Spray

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use 3 tpg spray when temperature is below 70 Deg F. for control of scale and mealybug. A82-690 Read More

LEAF BLIGHT: Also Known as Leaf Die-back, Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Caused by fungus invasion; spreads gradually through leaf; cut it out before treating; infected areas show watery before drying; control with Benlate, or Anti-Damp, or Tersan. RMH Read More

LEAF TIP BURN: Cercospora odontoglossi

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A fungus attacks cattleya seedlings and others; tiny raised spots dark brown in color under the leaves spread to the whole leaf; resembles spider mite injury; best control with benomyl 50% at 1 ttp... Read More

LEAF TIP BURN: Septoria selenophomoides

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Fungus found on many imported genera; tiny sunken yellow lesions on top or bottom surface; enlarge and become dark brown or black; spots sometimes coalesce; on older plants and fallen leaves fruiti... Read More

PESTICIDES: Shelf Life

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They should be purchased for short-term use; mark the date of purchase on the container; most keep their effectiveness for two or more years if stpred properly; signs of ineffectiveness in dusts an... Read More