SHADING, ECLIPTIC: Permanent with No Movable Parts

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin about 4 years ago.

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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+
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More The Orchid Doctor Articles under the Heading Shading

Shading Comments
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. John Small asked question Lady Bug or dangerous bug in category General Discussion
  2. John Small asked question Paper Wasp? in category General Discussion
  3. Sharie Heckaman started topic Photos of plants in category General Discussion
  4. Roberto Lizama started topic Orchid identification in category General Discussion
  5. Roberto Lizama asked question Help to idenficate this orchid in category General Discussion

New Comments

  1. Carol Holdren commented on member plant Phal. buyssoniana by Robert Oceans
  2. Mary Lane commented on member plant Fdk. After Dark 'SVO Black Pearl FCC/AOS; CCE/AOS' by William Gorski
  3. John Small commented on topic "Paper Wasp?" by John Small
  4. Lauren Hutchison commented on topic "Help to idenficate this orchid" by Roberto Lizama
  5. Carol Holdren commented on member plant Phal. Timothy Christopher by Vickie Seibert
  6. Carol Holdren commented on topic "Photos of plants " by Sharie Heckaman
  7. Carol Holdren commented on member plant C. Ronald Fonseca var. Compact 'SVO' by Vickie Seibert
  8. Roberto Lizama commented on member plant Ntl. bicolor by Roberto Lizama
  9. Carol Holdren commented on member plant Gra. stapeliiflora var. Waki by Melvin Waki
  10. Vickie Seibert commented on member plant Phal. Anna-Larati Soekardi 'Wilson' by Vickie Seibert
  11. Carol Holdren commented on member plant Rrm. Spunky by Melvin Waki
  12. Charles Vella commented on topic "Orchid list Cold/Warm" by Charles Vella
  13. Sandi Block-Brezner commented on topic "Brassocattleya hybrid?" by Sandi Block-Brezner
  14. Robert H. Findlay commented on topic "looking for info about an unregistered cattleya" by bob lewis
  15. james Hu commented on orchid Den. vannouhuysii
  16. Chase Hubbard commented on member plant Hknsa. Sogo Doll by Tom Kuligowski
  17. Colin Campbell commented on topic "Can anyone identify this orchid?" by Jan E Teitsworth
  18. Carol Holdren commented on member plant Lc. Memory of PienPien Wei by Robert Rand
  19. Robert Rand commented on member plant Bc. Yellow Bird by John Small
  20. Sharie Heckaman commented on member plant Btcm. Hwuluduen Chameleon by Diana Sammy