Newly Posted Articles

TEMPERATURE: To Set Buds on Paphiopedilums and Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 50 deg.F. is not necessary, 55 deg.F. is low enough; for early cymbidiums (blooming November to January) a cool temperature to 55 deg.F. during the mid-March to May period will set buds; for mid-se... Read More

PAPHIOPEDILUMS: Breeding

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Its history in Europe with the outstanding hybrids in perspective; an American viewpoint. W9-43;; -49 Read More

PAPHIOPEDILUMS: Browning of Leaves

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It starts at the base, is caused by Erwinia cyprepedii for which there is no safe cure; it is not always caused by watering, but stale air conditions can contribute to its development; try drenchin... Read More

PAPHIOPEDILUMS: Buds, Browning

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused possibly by insufficient reserve food; or, infection by fungus; or, low light intensity and too high temperature at night. A78-698 Read More

PAPHIOPEDILUMS: Clonal Propagation

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One application of Benzyladenine (Imgl- IBA) to a flowered division near the base will produce an axillary bud, thus valuable clones can be multiplied more rapidly under simple greenhouse condition... Read More

PAPHIOPEDILUMS: Cool Growing, and Warm Growing

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The first have solid green leaves the second have mottled or tessellated leaves; the division is misleading since some "cool" growing plants need 55 deg.F. nights; most others need 65 deg.F. nights... Read More

PAPHIOPEDILUMS: Fertilization Schedule

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Monthly feeding should be enough; if the medium is largely peat moss use 18-18-18 ratio; if bark use 30-10-10, either at the rate of one ounce to 5.5 gallons of water. A&3-1074 Read More

PAPHIOPEDILUMS: Fertilizing Over-done

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It causes scorched areas most likely at leaf tips. A78-606; 1/2 tpg. 30-10-10 every 3 weeks, all plants. A80-739It causes slow growth, hard leaves and a yellowish tinge. A78-606 Read More

CATTLEYAS: Flowers "sooting"

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago May be flyspeck (microthyriella) or leaf-spot (Phyflos tictina pyriformis); use Benlate 1 ttpg.; use also more ventilation. A79-124 Read More

CATTLEYAS: Flowers with White Warts

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Likely caused by spider mites; use malathion or Kelthane, plus 1/2 teaspoon liquid dish-washing solution per gallon of water. A78-1124 Read More