The Orchid Doctor Articles under the Heading Rots

Rots Comments
ROTS: Fungal and Bacterial Those that attack roots, pseudobulbs and leaves are numerous and have difficult names; here they are listed, illustrated for recognition and their controls supplied; to avoid meeting up with any of them it is recommended that you use a periodic spraying with Physan at 1 to 1.5 tpg. monthly as "preventative maintenance"-, which may not be approved by all. A82-479; address for identification service. OIE88Apr-l 0
ROTS: Fungus or Bacterial Systemic controls that are recommended for use on seedlings or mature plants include such names as Benlate and Difolatan especially for fungal problems; Black rot and Brown rot are both caused by bacteria and they are best controlled by Truban, which is available in most nurseries. OIE85Jy-7 0
ROTS: On Cymbidiums This is usually Black rot; the plants can be saved by scraping all the rot off the pseudobulbs and removing the roots to allow air to inhibit the continued growth of the anaerobic bacteria which is the root of the problem. A88-35 0
ROTS: Pseudobulbs Bulb rot or black rot is caused by Pythium and Phytophthora, which are closely related soil-inhabiting fungi whi ch spread under warm wet conditions and can be splashed about with a hose; try to apply chemicals as protective measure, especially in early spring; Fungarid is one such recommended in Australia. AU83-250 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

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