Newly Posted Articles

NAMES: Common or Native Names

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are imprecise and inaccurate and duplicated often, so they lead to confusion; many examples given. A85-980 Read More

MAG AMP: A Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Magnesium ammonium phosphate plus, since 1966, magnesium potassium phosphate; formula 7-40-6; good for species; incor porate into potting mix; slow-release. A68-1057; A77-1000; OWD Read More

FUNGUS DISEASES: Of Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For an overview refer to N315+ Read More

MEALY BUGS: Effect of Shell No-pest Strip

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Vapona fumes offer only a slow control; most effective is to place the plants and the Strip in a plastic bag. A76-1007; Vapona (DDVP) or, Elantfume 103 Smoke. A80-356 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

APHIDS: Toxicity of Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In increasing degree of toxicity to the user: malathion (LD50=2 oz.) dimethoate and lindane (1/2); and too toxic to be recommended was demeton (8 drops). A68-582 Read More

BACTERIAL BROWN ROT: Caused by Erwinia Cypripedii

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Small oval water-soaked spots in paphiopedilum leaves; change from light brown to deep chestnut enlarging steadily; can be suppressed by submerging in Natriphene at 1:2000 for 1 to 2.5 hours. BU49;... Read More

ORCHID CHIPS: Styrofoam

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A potting mix, with specially textured surface to increase water retention, used in Great Britain, not available in the U.S.A., but polystyrene ground up in a meat-grinder and used 50/50 with bark ... Read More

CROWDING PLANTS: Do Not Do it

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Air circulation is very important in the growth process. OD72-227 Read More

BRACTS ON SPIKES: But Flower Buds Don't Show There

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Both oncidiums and phalaenopsis require a cool treatment of several weeks to promote flowering. A80-960 Read More