MILTONIAS: Pleated Leaves

Ailments Oncidium Alliance Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 6 years ago.

Article Blog   Article Index
Accordion-like pleating is usually linked with under-watering but why does it happen when there is sufficient watering? Water can usually fail to wet overdry bark, which might require soaking for several hours to condition it again. A88-296
Share on Social Media:  
Log in to Add a Comment

More The Orchid Doctor Articles under the Heading Miltonias

Miltonias Comments
MILTONIAS: Brazilian Types Details of the approach to and the problems involved with the breeding of these plants, with pros and cons on many points raised for consideration; refer to A86-892 0
MILTONIAS: Breeding The story in France, where some of the greats come from; a review. W9-57 0
MILTONIAS: Growths Turn Yellowish-green and Fall Perhaps over-watering or accumulating salts in the medium cause this to new growths; try applying water liberally to the dry plants, after 15 minutes repeat. A77-527 0
MILTONIAS: Leaves Show Sudden Brown Patches Sample inspected showed no pathogens; the tip burn may have been caused by too strong fertilizer or lack of leaching. A65-910 0
MILTONIAS: Leaves with Accordion-like Pleating Step up the watering to two or three times weekly. A79-2 0
MILTONIAS: Leaves with Accordion-like Pleats Possibly a physiological disease; may show deficiency of minor elements; it is generally a temporary condition; plants grow out of it. A61-659 0
MILTONIAS: Light Requirements Shade them in the summer; Colombia types like 1,000 to 1,500 fc, and can be grown with paphiopedilums; Brazilian types like about 2,000 to 3,500fc. and can be grown with cattleyas. OD74-101 0
MILTONIAS: Minimum Optimums Temperature: 50 deg.F. nights; relative humidity: 70%; light: summer: 3,000 fcs, winter: 1,500 fcs. AU71-135 0
MILTONIAS: Pleating Leaves The real cause is more complex than ever explained before, it is caused by stress within- the plant brought on by conditions where both the greenhouse and the plant are too dry at the same time, immediately following a wet period for both; opposition is set up between met and dry periods and the plant cells experience a burst of growth followed by a shock of dryness; fluctuations must be avoided and an evaporative cooler is almost a must even in cool-weather country. Poul Hansen (Victoria, B.C.,1988) 0
MILTONIAS: Pleating of Leaves, Accordion Style This is most commonly caused by insufficient watering during the "expansion" stage of the new growths; the cool-growing types do not like to dry out between waterings and if watering is missed for a time, the leaves suffer a set-back. A82-920 0
MILTONIAS: Potting Mix Recommended Two parts chopped osmunda fiber; one part live sphagnum, a small amount of well-rotted cow manure added; water liberally when growing. A64-114 0
MILTONIAS: Rootless Plants Place them in an air-tight plastic bag with some moist sphagnum, inflate it by mouth for the carbon dioxide administered, seal it tightly; repeat fortnightly, re-moistening as necessary; when roots form, repot. A85-966 0

New Topics

  1. JENNIFER CHARMAN asked question SSPECIES OF ORCHID in category General Discussion
  2. Lois Lane asked question Why can't I post on this site? in category General Discussion
  3. Karen Johansen asked question Historic Cattleya in category Cattleya Alliance
  4. William Woodcock asked question Encyclia aspera in category Curiosity
  5. Ron Hellendall asked question Designing a greenhouse for orchid growing in category General Discussion

New Comments

  1. Lois Lane commented on member plant Ctna. Why Not by Alex Maximiano
  2. Carol Holdren commented on topic "SSPECIES OF ORCHID" by JENNIFER CHARMAN
  3. Carol Holdren commented on topic "Why can't I post on this site? " by Lois Lane
  4. Carol Holdren commented on topic "Historic Cattleya" by Karen Johansen
  5. Carol Holdren commented on topic "Encyclia aspera" by William Woodcock
  6. Jim McGuinn commented on topic "Designing a greenhouse for orchid growing" by Ron Hellendall
  7. Mark Bennett commented on member plant Sarcochilus Newbold Alta 'SBC092' by Mark Bennett
  8. Mark Bennett commented on member plant Sarcochilus Newbold High Noon 'SB140' by Mark Bennett
  9. Carol Holdren commented on orchid Epi. Moonlight Firefies
  10. Jeanne Uzar Hudson commented on topic "Paph Support" by Nicholas Levendosky
  11. Rosemary Chenery commented on topic "Lost tag - can anyone provide a name" by Rosemary Chenery
  12. Taylor Savage commented on topic "Myrmecatavola Frances Fox" by Elizabeth Wagner
  13. Vanessa Castleberry commented on member plant Phal. Corning-Cervi by Vanessa Castleberry
  14. Arne Schon commented on orchid B. perrinii
  15. Tina Bond commented on member plant Phal. pulchra by Vickie Seibert
  16. Tina Bond commented on member plant Bc. Memoria Nancy Ginoccho by William Gorski
  17. Tina Bond commented on member plant Rlc. Hsinying Williette by Mary Lane
  18. Carol Holdren commented on topic "Articles posted" by Stephen Dorsey
  19. Mary Lane commented on member plant Phal. I-Hsin Rose Milkshake by s mcn
  20. Shawn Dvorak commented on member plant Bulb. mucronatum by Shawn Dvorak