The Orchid Doctor Articles under the Heading Ultraviolet Light

Ultraviolet Light Comments
ULTRAVIOLET HEAT LAMPS: Used as a Heat Lamp in the Greenhouse Use it only if the light, which is toxic to plants, is shielded from them. A68-524 used for varying lengths of time = the wave-length of u.v. is harmful to plants; short periods have no effect; kind of light usable by plants begins at 425 millicrons and u.v. is 400 or less; fluorescent lamps are mercury lamps of a sort, color-corrected for plant growing. A70-55 0
ULTRAVIOLET LIGHT: Flower Patterns Are Enhanced Under it In nature the light is useful for orienting flying insects to the right flowers for pollination. A71-877 0
ULTRAVIOLET LIGHT: Mimicry on Flowers To improve fertilization and attract pollinators, this form of light produces patterns; with reference to a bulbophyllum species examined; refer to A83-362 0
ULTRAVIOLET LIGHT: Sterilizing Agent It is used for sterilizing air in a chamber; do not expose bare skin to it; it will kill plant tissue, and seed. A73-709 0

New Topics

  1. Judith Pariseau asked question Paphiopedilum culture differences in category Paph Alliance
  2. Marc Lefkowitz asked question Bulbophyllum in category Bulbophyllums
  3. Tony Borowiecki asked question Can a Bealleara re-flower in category Oncidium Alliance
  4. Tony Borowiecki asked question Re-flowering Orchids in category Dendrobiums
  5. Sylvia Spence asked question How to care for my new orchid in category General Discussion

New Comments

  1. Judy Bailey commented on topic "Paphiopedilum culture differences " by Judith Pariseau
  2. David Hickman commented on topic "Mystery Orchid" by David Hickman
  3. Carol Holdren commented on topic "Bulbophyllum " by Marc Lefkowitz
  4. Carol Holdren commented on topic "Can a Bealleara re-flower" by Tony Borowiecki
  5. Carol Holdren commented on topic "How to care for my new orchid" by Sylvia Spence
  6. Bodil Bruus commented on member plant Ctt. Mrs. W. N. Elkins var. coerulea by Linda Thorne
  7. Jan E Teitsworth commented on topic "Can anyone identify this orchid?" by Jan E Teitsworth
  8. Carol Holdren commented on topic "Brassolaeliocattleyamaianh " by Kim Loan T Nguyen
  9. David garcia commented on member plant Myrmecophilia tibicinis stromburgkia trumpet player by David garcia
  10. Carol Holdren commented on member plant Bc. Maikai by William Gorski