BROWN ROT: In Paphiopedilums

Ailments Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin over 7 years ago.

Article Blog   Article Index
Caused by the bacillus Erwinia cypripedii; starts as small chestnut brown spot on leaf; spreads to crown then to other leaves; spreads rapidly; plant can be saved by excision; soak for hours in Natriphene or Anti-Damp; repeat after a few days, two or three treatments. N320

Drench with Banrot, 1 ttpg. A66-406; A75-980 (illus.); A77-449

Small round to oval water-soaked spots, in middle of leaf; not common; spray with Physan 20, 1/2 ttpg. AH22

Share on Social Media:  
Log in to Add a Comment

More The Orchid Doctor Articles under the Heading Brown Rot

Brown Rot Comments
BROWN ROT: Erwinia cypripedii Attacks paphiopedilums; bacterial brown rot starts as small roundish water-soaked yellow spots often in the middle of the leaf; changes to dark chestnut; may appear greasy; reaches growing point of plant and changes it to dark shrivelled mass; isolate plants; disinfect bench with Clorox 10%; destroy all leaves; spray with Physan 20, 1.5 tpg. or drench in Natriphene 1:2,000 tpg.). B40; BU49 0

New Topics

  1. David George asked question recently purchased orchid shows unstoppable roots in category General Discussion
  2. katherine mott asked question shorter stem with less vigorous blooms in category Phalaenopsis
  3. Glenda Ratliff started topic need info on yellow bird in category General Discussion
  4. Paula Milano asked question Looking to join an orchid club. in category General Discussion
  5. Jeanne Uzar Hudson asked question Meetings for Advanced Growers in category General Discussion
Ask a Question

Start a Topic

New Comments

  1. Carol Holdren commented on topic "recently purchased orchid shows unstoppable roots " by David George
  2. Michael Makio commented on orchid V. Beatrice Makio
  3. Carol Holdren commented on topic "shorter stem with less vigorous blooms" by katherine mott
  4. Carol Holdren commented on topic "need info on yellow bird" by Glenda Ratliff
  5. Carol Holdren commented on topic "Looking to join an orchid club." by Paula Milano
  6. Jeanne Uzar Hudson commented on topic "Repotting Large Cattleyas" by Jeanne Uzar Hudson
  7. Jeanne Uzar Hudson commented on member plant Paph. malipoense by Jeanne Uzar Hudson
  8. William Gorski commented on topic "how difficult is it growing from seed" by kevan gregory
  9. Carol Holdren commented on topic "Information " by Carmen Britton
  10. Carol Holdren commented on member plant C. lueddemanniana var. Coerulea, Venosa by Paulo Fiuza
  11. Jeanne Uzar Hudson commented on topic "Banrot 40WP" by Therese Stecher
  12. Maria Lucia Prieto Real commented on orchid Rlc. Village Chief Armani
  13. Mariana Chacon commented on orchid Gom. Jiaho Queen
  14. Roberto Lizama commented on member plant Max. dillonii by Roberto Lizama
  15. Nancy Speedy commented on scheduled event "2024 Orchid show Martin County "Ocean of Orchids"" by Martin County Orchid Society
  16. Jeanne Uzar Hudson commented on member plant Paph. Fanaticum by Jeanne Uzar Hudson
  17. R .Benson commented on member plant Den. Tianmu Green Elf 'Sweetheart' by R .Benson
  18. Alice Walker commented on article "Oeniella polystachys" by Tom Kuligowski
  19. Kathryn Kersey commented on scheduled event "Boca Raton Orchid Society Show & Sale" by Boca Raton Orchid Society
  20. BJ Lough commented on member plant Asctm. miniatum by BJ Lough