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. 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