PSEUDOBULBS: Twisted Bulbs on Cattleyas

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 7 years ago.

Article Blog   Article Index
These can develop for no apparent reason, except that water lodging in immature growths may be the cause. A85-832
Share on Social Media:  
Log in to Add a Comment

More The Orchid Doctor Articles under the Heading Pseudobulbs

Pseudobulbs Comments
PSEUDOBULBS: Black A fungus disease causes this on cattleyas; control it best by watering in the morning and provide good air circulation. A68-1107 0
PSEUDOBULBS: Blackening and Dying It is probably one of the black rot diseases; try Banrot at 1 ttpg. or Benlate at 1/2 ttpg. plus Truban at 1 ttpg. mixed. A76-403 0
PSEUDOBULBS: Broken To prevent infection expose the broken surface to air and allow the cells to dry. A71-1021 0
PSEUDOBULBS: Cracking Cattleyas sometimes develop horizontal cracks or breaks in their pseudobulbs and the upper part can break off under the weight of the flowers; the cause in not known; it may be genetic; illus. AH59It may be inherited or caused by the lack of boron; apply a solution of 1 tpg. of boric acid four or five times a year. S215; this will kill the plant OWD 0
PSEUDOBULBS: Disfigured by Horizontal Cracking These unusual splits are physiological disorders which weaken the pseudobulb: and easily cause breaking, sometimes by its own weight. A85-1335 0
PSEUDOBULBS: Dormant Too many of them on a plant often indicates that a poor root system exists. OD68-172 0
PSEUDOBULBS: Formation Short very fat ones on cattleyas are possibly genetic in origin; it may be caused by a deficiency of boron; make 1 tpg. of Boric acid and put 2 ttpg. of this in each gal. of fertilizer solution and use it every two months, A71-917 0
PSEUDOBULBS: Mature What constitutes maturity: it is when neither bulb or leaf is expanding, when roots are active, or inactive, but healthy during their rest period; ripe; fully made up. A70-535; OR78-177 0
PSEUDOBULBS: Rootless They still serve a purpose; if they have leaves and are plump, they contain and produce food. A75-803; A80-356 0
PSEUDOBULBS: Rotting When this happens, open up the potting mix if it is dense; watch for water with nutrient in the leaf joints which can cause bacterial damage; peat moss and sand in t he mix can also contribute to it. AU84-204 0
PSEUDOBULBS: Sheath Technically called the cataphyl, the membraneous covering is a protection to the new bulb and especially to the new eye; remove it only if it is loose. A68-7 0
PSEUDOBULBS: Shrivelling On cattleyas this means that humidity is low or that the potting medium is loose and is providing poor moisture distribution. A75-876 0
PSEUDOBULBS: Shrivelling During Rest Period Backbulbs may shrivel but those with leaf should not; you do not have to water on a humid cloudbathed tropical mountain.' A70-535 0
PSEUDOBULBS: Wrinkled Back bulbs three to four years old show the natural aging process; it is hastened by over-watering and poor cultural practices. A78-309 0

New Topics

  1. Danny Lyon asked question Trichocentrum luridum in category General Discussion
  2. JENNIFER CHARMAN asked question SSPECIES OF ORCHID in category General Discussion
  3. Lois Lane asked question Why can't I post on this site? in category General Discussion
  4. Karen Johansen asked question Historic Cattleya in category Cattleya Alliance
  5. William Woodcock asked question Encyclia aspera in category Curiosity
Ask a Question

Start a Topic

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