The Orchid Doctor Articles under the Heading Nectars

Nectars Comments
NECTARS: Cause of Exudate on Sheaths It varies from plant to plant; generally considered to be a sign that plants are making vigorous growth. A63-1011; "sooty mold" fungus turns the exudate into black smudges but does no harm; wash it off. OR66-179 0
NECTARS: "honey" Exuding Around Flowers It is associated with good culture. A73-1081; an adaptive mechanism enabling plants to avoid excessive carbohydrates resulting from enhanced photosynthesis. A67-468; the "honey" contains 97% sucrose. OR76-249; for the kinds of sugars contained, see an analysis at A69-866+ 0
NECTARS: Production of Nectars on Plants as Exudates Floral and extra-floral exudates contain sucrose, fructose and glucose, but no exotic sugars. A71-1092; they occur more often where there is a big change from day to night temperatures. F74-33 0

New Topics

  1. Nicolaas Chomenko asked question E. veratrifolia or Tolu. Louise Elmore ‘Elsa’ in category Other Genera
  2. Lilla Toelcke asked question Den. Somkiat blue in category General Discussion
  3. James W McCully asked question How to read archived articles ? in category General Discussion
  4. David George asked question recently purchased orchid - what to expect in category General Discussion
  5. Danielle Carbonneau asked question phalaenopsis, dendrochum and Odontoglossum in category Phalaenopsis
Ask a Question

Start a Topic

New Comments

  1. Julie Ellner commented on member plant Phal. amabilis var. formosanum by Vickie Seibert
  2. Julie Ellner commented on member plant Rlc. Green Dragoon 'Mendenhall' by Jeanne Uzar Hudson
  3. Danielle Carbonneau commented on member plant Ons. Catatante 'Los Roble' by Henry Shaw
  4. Barry J Silver commented on orchid Lyon. SunCoast Pink Passion
  5. Carol Holdren commented on topic "Phalaenopsis William Kistler?" by Nicholas Filannino
  6. Carol Holdren commented on orchid Colm. Eric Gabriel Heines
  7. Carol Holdren commented on topic "Cattleya little susie" by Juliann Eckhard
  8. Carol Holdren commented on member plant Bc. Morning Glory by Chris Siolo
  9. R .Benson commented on member plant Kir. New Hybrid (Fred Clarke) SVO9831 by R .Benson
  10. Carol Holdren commented on topic "Blooming Stenglottis Venus “jamboree “" by John Urey