The Orchid Doctor Articles under the Heading Petal Blight

Petal Blight Comments
PETAL BLIGHT: Botrytis It is common during cool, damp weather, with poor air circulation; most harmed by it are cattleya and phalaenopsis flowers; destroy all infected blossoms quickly, spray with benomyl (Benlate 50W) at Ittpg,, or Physan at ittpg. AH86-90 0
PETAL BLIGHT: Botrytis cinerea It is confined to older flowers during cold damp weather; it is most common on various genera; small, circular spots often bordered by a delicate rim of pink; the imperfect stage Botrytis cinerea is the most destructive; destroys flowers; spray with Benlate 50WP at 1 ttpg. 30 days apart; also spray flowers just prior to opening. BU43 0
PETAL BLIGHT: Caused by Fungi Other Than Botrytis 16 other fungi have been found as causes; many are saprophytes living on decaying leaves, flowers, potting mixes; all such must be removed from under benches and bench tops; periodical spraying of floors, walls, ceiling and plant foliage with fungicide such as Captan, Actidione, Nabam, Zineb, Maneb, Ferbam, etc. is necessary; use Nystatin or Natriphene on cut flowers. A66-107; AH35 0

New Topics

  1. Jeanne Uzar Hudson asked question Meetings for Advanced Growers in category General Discussion
  2. kevan gregory asked question how difficult is it growing from seed in category General Discussion
  3. Carmen Britton asked question Information in category General Discussion
  4. Jeanne Uzar Hudson asked question Repotting Large Cattleyas in category Cattleya Alliance
  5. Nancy Shapiro asked question Where did you find this type of orchid pot? in category General Discussion

New Comments

  1. Jeanne Uzar Hudson commented on topic "Repotting Large Cattleyas" by Jeanne Uzar Hudson
  2. Jeanne Uzar Hudson commented on member plant Paph. malipoense by Jeanne Uzar Hudson
  3. William Gorski commented on topic "how difficult is it growing from seed" by kevan gregory
  4. Carol Holdren commented on topic "Information " by Carmen Britton
  5. Carol Holdren commented on member plant C. lueddemanniana var. Coerulea, Venosa by Paulo Fiuza
  6. Jeanne Uzar Hudson commented on topic "Banrot 40WP" by Therese Stecher
  7. Maria Lucia Prieto Real commented on orchid Rlc. Village Chief Armani
  8. Mariana Chacon commented on orchid Gom. Jiaho Queen
  9. Roberto Lizama commented on member plant Max. dillonii by Roberto Lizama
  10. Nancy Speedy commented on scheduled event "2024 Orchid show Martin County "Ocean of Orchids"" by Martin County Orchid Society