DAY LENGTH: Increased by Artificial Light

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 9 years ago.

Article Blog   Article Index
Cattleyas may not flower with too much light, under lights and with kitchen lights on full. A86-1031

Fall flowering cattleyas most respond to light; increase the day length by turning on lights for four hours from 10 p.m. to 2 a.m. each night; several weeks later after lights are turned off the plants should begin to flower; start lights in mid-July to delay fall-flowering cattleyas into winter. F74-165

Share on Social Media:  
Log in to Add a Comment

More The Orchid Doctor Articles under the Heading Day Length

Day Length Comments
DAY LENGTH: Response of Plants Cattleya warscewiczii does not respond to day-length; if a hybrid with it in its genes, flowers in early summer and the sheath is green and fleshy, it will not respond to photoperiod control. A86-815 0
DAYS, SHORT: Effects Cloudy weather can cause short days effect; stimulates flowering; weak light causes shortage of carbohydrates. A77- 36 0
DAYS, SHORT: How Many Required to Set Cattleya Buds Sometimes as few as five days; some crippling of flowers will show if too-long days follow the bud set period. A70-798 0

New Topics

  1. David George asked question Odom's Fascination - an unusual orchid in category General Discussion
  2. Carol Holdren asked question Grow Tent in the Garage in category General Discussion
  3. David George asked question rlc Caotan Beauty found at Home Depot in category Cattleya Alliance
  4. Kristin Dorris asked question Odontocidium Orchid fungus? in category General Discussion
  5. Maria Fernandez asked question Wild. Lisa Devos in category Dendrobiums
Ask a Question

Start a Topic

New Comments

  1. Carol Holdren commented on topic "Odom's Fascination - an unusual orchid" by David George
  2. Dr. Florian Wolf commented on topic "Wild. Lisa Devos" by Maria Fernandez
  3. Michael Valcarcel commented on member plant Rlc. Chief Takanaka by Walceli Muniz Valverde
  4. Michael Valcarcel commented on member plant Rlc. Montana Spirit by Michael Valcarcel
  5. Michael Valcarcel commented on member plant Ctt. Blazing Sun by Michael Valcarcel
  6. Michael Valcarcel commented on member plant Bc. Spotted Clown by Michael Valcarcel
  7. Maria Skrypnyk commented on member plant Yamadara Redland Sunset by Maria Skrypnyk
  8. André Pessina commented on topic "Odontocidium Orchid fungus?" by Kristin Dorris
  9. Linda Hartman commented on topic "Image of a plant please" by Leshya Perkins
  10. Paul Reavis commented on orchid Milt. Kismet
  11. Christiaan Viljoen commented on member plant Psh. fragrans by Christiaan Viljoen
  12. Christiaan Viljoen commented on member plant Z. maculatum by Christiaan Viljoen
  13. Christiaan Viljoen commented on member plant C. Gaskell-Pumila 'Azure Star' by Christiaan Viljoen
  14. Robert H. Findlay commented on member plant Rlc. Joy Sokabe var. Volcano Queen by Sally K
  15. James Lunsford commented on member plant Lc. Sagarik Wax 'African Beauty AMO/AOS x Blc. Cherry Suisse'Kauai' HCC/AOS var. Cattlyea 'Hybrid ' by James Lunsford
  16. John Varigos commented on orchid Bulb. schwarzii
  17. Linda Hartman commented on topic "Issue with Blc. Ben O'Neil "Jubilee" by Glenda Ratliff
  18. Henry Shaw commented on member plant Ons. Catatante 'Los Roble' by Henry Shaw
  19. Mary Lane commented on member plant Den. Tianmu Canary by Terre Moore
  20. Pamela Stegmaier commented on member plant Rlc. Esther Costa var. Orange Fantasy by Mary Lane