The Orchid Doctor Articles under the Heading Shading

Shading Comments
SHADING, ECLIPTIC: Permanent with No Movable Parts The amount of shading changes with the inclination of the sun; for the south end of a greenhouse; like a fixed Venetian blind; slats are set so low that the winter sunlight enters, but the high summer sun is blocked; specifications and diagrams; refer to ODA74-64+ 0
SHADING: For Cattleyas In California use 63% shade cloth for them and for dendrobiums. A86-719 0
SHADING: For Greenhouses Recently developed products include "Vari-Shade" a coating; "Ripple glass" which allows good light to pass through and alleviates the need for shade; "Papronet" a netting for shade made of polypropylene and polyethylene, for details refer to OR81-186 0
SHADING: For Phalaenopsis In California use 73% for both them and Paphiopedilums. A86-719In New York State in winter use not more than 25%. A81-688 0
SHADING: Lath Blinds These can be used to reduce the heating effect of sunlight and not its intensity by a compromise in lath blinds; raise parallel runners about nine inches above the glass and rest the rolled-up lath blinds (Western Cedar preferred) so that two rolls can be extended outward from the centre spot on the roof; for details and management see OR87My-84; A80-1140 0
SHADING: On a Fiberglass Greenhouse To vary the shade with the season; if the fiberglass corrugations run east-west, the high curves can be shade-painted leaving the trough area of strips clear to provide about 30% shade and as the sun shifts towards the south more available light will enter the unshaded part; neat, eh? A83-267 0
SHADING: Purpose It reduces both the heating effect of the sun and the intensity of light, so a compromise is always in order; the best by test is lath blinds, placed about one foot above the roof, and rolled into place when necessary; refer to OR87-84 0
SHADING: Removing it A wire brush on a long pole, using water and soap, or Sal soda (Sodium carbonate -- washing soda, if you can find it) are aids to its removal. OD87-10 0
SHADING: Supplementary Type Ordinary plastic door or window screening provides about 2 0% screening, and two layers can be used effectively in an emergency. A85-1109 0
SHADING: Too Much 70% shade for cattleyas will produce thin and weak plants, the surest sign of not enough light, and 55 to 63% is usually recommended (in California?) A84-1061 0
SHADING: Whitewash A substitute for the old-fashioned whitewash can be found in a product used for marking lines on playing fields, such as baseball diamonds; one name for it is Sportsfield Whiting; mixed with water it can be applied like paint as thickly as need be; it takes a bit more cleaning off in the fall. RMH 0

New Topics

  1. Nancy Shapiro asked question Where did you find this type of orchid pot? in category General Discussion
  2. Charles H Wood asked question Orchids wanted St.Croix usvi in category General Discussion
  3. William Gorski asked question Is this a species or Primary Hybrid? in category General Discussion
  4. Therese Stecher asked question Banrot 40WP in category General Discussion
  5. Chen Jimmy asked question How to determine the species composition´╝č in category General Discussion

New Comments

  1. Dianne Mayne commented on topic "Banrot 40WP" by Therese Stecher
  2. Linda Thorne commented on member plant Paphiopedilum Munchkin Mopsi Aru by Linda Thorne
  3. Carol Holdren commented on topic "Orchids wanted St.Croix usvi" by Charles H Wood
  4. William Gorski commented on topic "Is this a species or Primary Hybrid?" by William Gorski
  5. Henry Shaw commented on member plant Coel. Jannine Banks 'Snow White' by Henry Shaw
  6. Carol Holdren commented on topic "Trichocentrum luridum" by Danny Lyon
  7. Carol Holdren commented on topic "What is the culture for Cattliante Chongkolnee" by Mike Minney
  8. Carol Holdren commented on topic "How to determine the species composition´╝č" by Chen Jimmy
  9. Lois Lane commented on member plant Ctna. Why Not by Alex Maximiano
  10. Carol Holdren commented on topic "SSPECIES OF ORCHID" by JENNIFER CHARMAN