The Orchid Doctor Articles under the Heading Mold, Snow

Mold, Snow Comments
MOLD, SNOW: Characteristics and Controls It grows in the potting media and envelopes the roots so they are cut off from water and air; repot the plant, destroy all mold and media; immerse the bottom half of the plant in Physan l.5 tpg.; repeat if necessary. AH86-90 0
MOLD, SNOW: Fungicide as Control Use Physan 20 at 1.5 tpg.; like Shield it is a combination of quarternary ammonium chlorides; so is Roccal. A75-781; A77-702; wash plant in Shield, one ounce to one gal. water and repot..in clean medium. S205 0
MOLD, SNOW: In Bark It does not harm the roots except to use the nitrogen which the plant would normally need; it also contributes to compost breakdown; use Maneb but not Benlate. OR82-102 0
MOLD, SNOW: On the Pot Medium Control: drench or dip plant in Shield 10%, at one ounce per four gals, water; or use Physan 20 at 1.5 tpg., maybe more than once at a few days interval. A66-407; A76-895 0
MOLD, SNOW: Phytogaster Sp. Not a parasite but a saprophyte on the growing media;, leads to poor growth; water-repellent fungus prevents roots from getting water and air; white powdery growth on the top of the media indicates the inside of the pot has been invaded; discard old media; immerse roots, rhizomes,etc. in Shield 10% at one oz. to four gals water; repeat if necessary; repot. AH22White powdery growth on media; covers roots and rhizomes; impermeable to water; treat with Shield at one ounce to four gals, water; repot. N319White powdery growth on top of bark or tree fern media; invades whole pot; a saprophyte on the media; suffocates the roots; control: drench with Semesan, ferbam, or Tersan 75 found to be not fully effective; use Shield as a dip or drench at one oz. per four gals, water at two week intervals; or use Physan 20 at X% ttpg. B37; BU37 0
MOLD, SNOW: Vinegar Dip This has been recommended as a way to "discourage" it: one part of cider vinegar is added to 20 parts of water as an acid solution as a drench. Fitch -- All about orchids. (1981)-219 0

New Topics

  1. Nancy Shapiro asked question Where did you find this type of orchid pot? in category General Discussion
  2. Charles H Wood asked question Orchids wanted St.Croix usvi in category General Discussion
  3. William Gorski asked question Is this a species or Primary Hybrid? in category General Discussion
  4. Therese Stecher asked question Banrot 40WP in category General Discussion
  5. Chen Jimmy asked question How to determine the species composition？ in category General Discussion
Ask a Question

Start a Topic

New Comments

  1. Dianne Mayne commented on topic "Banrot 40WP" by Therese Stecher
  2. Linda Thorne commented on member plant Paphiopedilum Munchkin Mopsi Aru by Linda Thorne
  3. Carol Holdren commented on topic "Orchids wanted St.Croix usvi" by Charles H Wood
  4. William Gorski commented on topic "Is this a species or Primary Hybrid?" by William Gorski
  5. Henry Shaw commented on member plant Coel. Jannine Banks 'Snow White' by Henry Shaw
  6. Carol Holdren commented on topic "Trichocentrum luridum" by Danny Lyon
  7. Carol Holdren commented on topic "What is the culture for Cattliante Chongkolnee" by Mike Minney
  8. Carol Holdren commented on topic "How to determine the species composition？" by Chen Jimmy
  9. Lois Lane commented on member plant Ctna. Why Not by Alex Maximiano
  10. Carol Holdren commented on topic "SSPECIES OF ORCHID" by JENNIFER CHARMAN