PSEUDOBULBS: Cracking

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin almost 8 years ago.

Article Blog   Article Index
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. AH59

It 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

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: 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: Twisted Bulbs on Cattleyas These can develop for no apparent reason, except that water lodging in immature growths may be the cause. A85-832 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. Danielle Carbonneau asked question phalaenopsis, dendrochum and Odontoglossum in category Phalaenopsis
  2. Nicholas Filannino asked question Phalaenopsis William Kistler? in category General Discussion
  3. Mark Farran asked question How to open and read articles listed in category General Discussion
  4. Juliann Eckhard started topic Cattleya little susie in category Cattleya Alliance
  5. Shannon Gardea asked question NELLY ISLER in category General Discussion
Ask a Question

Start a Topic

New Comments

  1. Julie Ellner commented on member plant Phal. amabilis var. formosanum by Vickie Seibert
  2. Julie Ellner commented on member plant Rlc. Green Dragoon 'Mendenhall' by Jeanne Uzar Hudson
  3. Danielle Carbonneau commented on member plant Ons. Catatante 'Los Roble' by Henry Shaw
  4. Barry J Silver commented on orchid Lyon. SunCoast Pink Passion
  5. Carol Holdren commented on topic "Phalaenopsis William Kistler?" by Nicholas Filannino
  6. Carol Holdren commented on orchid Colm. Eric Gabriel Heines
  7. Carol Holdren commented on topic "Cattleya little susie" by Juliann Eckhard
  8. Carol Holdren commented on member plant Bc. Morning Glory by Chris Siolo
  9. R .Benson commented on member plant Kir. New Hybrid (Fred Clarke) SVO9831 by R .Benson
  10. Carol Holdren commented on topic "Blooming Stenglottis Venus “jamboree “" by John Urey
  11. Jeanne Uzar Hudson commented on member plant Lc. Canhamiana var. coerulea 'Cobalt' by Jeanne Uzar Hudson
  12. Jeanne Uzar Hudson commented on member plant Sns. gemmata by Jeanne Uzar Hudson
  13. Stefan Neher commented on topic "Orchid roots .com site?" by Mary Lane
  14. Kevin Barry commented on member plant Bul. Tammie Sue Pernas by Tony Pernas
  15. Linda Hartman commented on member plant Ctt. Final Blue by Linda Hartman
  16. Kevin Bergeson commented on member plant Paph. rothschildianum by Kevin Bergeson
  17. Carol Holdren commented on topic "recently purchased orchid shows unstoppable roots " by David George
  18. Michael Makio commented on orchid V. Beatrice Makio
  19. Carol Holdren commented on topic "shorter stem with less vigorous blooms" by katherine mott
  20. Carol Holdren commented on topic "need info on yellow bird" by Glenda Ratliff