The Orchid Doctor Articles under the Heading Air Pollution

Air Pollution Comments
AIR POLLUTION: Sulfur Dioxide, Ozone, Ethylene Cattleya buds and phalaenopsis buds just opening are extremely sensitive to ethylene cloudy, still weather in autumn and winter allows concentration; injury varies with degree and duration; high concentration causes older cattleya leaves to suffer; no control available; activated carbon filters are expensive. A65-697; A67-567; AH54 0

New Topics

  1. Tammy Bennett asked question LOOKING to BUY -Phalanopis “Dragon Tree Maple” in category Phalaenopsis
  2. Rae Walker asked question Dendrobium No I’d. HELP! in category Dendrobiums
  3. John Hyatt asked question Deformed growths on BLC King of Taiwan in category Cattleya Alliance
  4. Darrin Duling asked question Unidentified Bratonia in category General Discussion
  5. Armando Mantellini started topic Cattleya jenmanii missing awards in category Cattleya Alliance

New Comments

  1. Carol Holdren commented on member plant Renantanda Sunrise 'Prasongs' by Andrew Chan
  2. Carol Holdren commented on topic "Dendrobium No I’d. HELP!" by Rae Walker
  3. Carol Holdren commented on article "CATTLEYAS: Control of Blooming Time" by Robert M. [Bert] Hamilton (Compiler)
  4. Carol Holdren commented on member plant Lc. Nice Holiday 'Suntopia' by William Gorski
  5. Robert H. Findlay commented on topic "Phragmipedium Cape Sunset or Eric Young?" by Darrin Duling
  6. Robert H. Findlay commented on member plant Phrag. Ecuagenera Dream by Robert H. Findlay
  7. Tatjana Opekunova commented on article "CATTLEYAS: Reasons for Non-flowering" by Robert M. [Bert] Hamilton (Compiler)
  8. Carol Holdren commented on member plant Zygopetalum var. Big Red One by Wyatt Parker
  9. Carol Holdren commented on topic "Need ID, Please" by Oliver Quin Surco
  10. Sara D commented on member plant Phal. bellina var. Coerulea by Sara D