Newly Posted Articles

MAGNESIUM SULPHATE: Epsom Salts

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Can be applied twice a year to cymbidiums grown in full sun in California; it aids in photosynthesis and helps the plants to withstand the heat of the bright sun. OA87-93 Read More

FERTILIZERS: 30-10-10

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Recommeded instead is 20-10-20 called Peters' Peat Lite Special, apparently better because of its nitrate nitrogen, instead of the more common ammonium nitrogen from urea. OIE86Sept. Read More

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 Read More

REST PERIOD: Necessity for

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The idea that all orchids need a rest period is a fallacy; not necessary for many modern hybrids; a good practice is to water all plants with good green leaves. A68-431 Read More

REST: Is it Necessary?

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Many orchids experience definite wet and dry periods in their native haunts but it is not necessarily the best way to treat them under cultivation; pseudobulbs from wet/dry areas can be tripled in ... Read More

MAGNESIUM SULPHATE: Purpose in Plant Nutrition

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is an essential and serves the same purpose in the plant as iron in the human blood stream; dolomite lime has some in it; also know as Epson Salts, it can be applied at the rate of one pound per... Read More

MAGNESIUM SULPHATE: Supplementary Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago One teasoon spread around the top of an average sized pot is sufficient in the summer months; it can also be applied as a spray, Au87 Read More

MALATHION: Insecticide/miticide

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A stomach and contact poison; recommended for springtails, red spider mites, aphids, mealy bugs, ants; apply at 1 ttpg. weekly; has an LD-50 of 880 mg. A71-894; OD65-168 Read More

MALATHION: Insects Apparently Immune

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Try adding a wetter-sticker at the rate of 1/2 tpg. to the Malathion spray of 1.5 tpg. A75-500 Read More

CYMBIDIUMS: Culture to Induce Spiking

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago "full-sun" treatment can be successful; give as much sun as possible in the summer including risk of sunburn and with more water and fertilizer, OD68-244The day-night temperature change must be 20 ... Read More