Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums


The Friendliest Orchid Community on the Internet!


  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"


Let us help you grow your Orchids better; Join our community today.


YES! I want to register an account for free right now!


Register or Login now to remove this advertisement.

Page 2 of 2 FirstFirst 12
Results 11 to 19 of 19
Like Tree2Likes

physan resistance

This is a discussion on physan resistance within the General Orchid Culture forums, part of the Orchid Culture category; I don't really think I have a problem, but I thought I was missing something ...

Click here to increase the font size Click here to reduce the font size
  1. #11
    Liz's Avatar
    Liz
    Liz is offline Senior Member
    Join Date
    May 2004
    Location
    San Diego
    Posts
    152

    Default

    I don't really think I have a problem, but I thought I was missing something because I didn't have Physan. I've got about 40 plants ouside, but humidity is not too high, it doesn't rain too much, and the air circulation is great. Maybe I didn't need it after all.

  2. #12
    Persistence's Avatar
    Persistence is offline Senior Member
    Join Date
    Jun 2004
    Location
    Washington State
    Posts
    185

    Default

    Well, an ounce of prevention and all that. fungus/bacteria come in all shapes and attack certain plants. Ever have a new growth rot? Every have a black spot that continues to grow appear? Ever have rust spots? Most are fungal problems. Physan or Consan are a cheap, non-toxic way to prevent these problems as well as a ton of others. For that collection just mix in a spray bottle and spray your plants every few weeks to once a month.

  3. #13
    Liz's Avatar
    Liz
    Liz is offline Senior Member
    Join Date
    May 2004
    Location
    San Diego
    Posts
    152

    Default

    Thanks Persistance. That's what I needed to know. And now that I've looked at the label, I see I can use it for mildew on my roses and some other things, too.

  4. #14
    Heather is offline Banned
    Join Date
    May 2004
    Posts
    1,844

    Default

    Very helpful info, and pretty much what I was thinking. Thanks to all!

  5. #15
    Aerides is offline Senior Member
    Join Date
    Jun 2004
    Location
    New York, NY
    Posts
    116

    Default

    Someone on another chatline recommended Dithane 45, a systemic, to treat a leaf condition on a paph that wouldn't go away - just kept eating away down from the tip - even after sterilizing and cutting. I already had some so I used it (and it worked). The next day I woke up dizzy (well, dizzier than usual!) and scared myself to death, figuring I'd been poisoned. Turned out to be an inner ear thing. Phew!

  6. #16
    PAGrower is offline Senior Member
    Join Date
    May 2004
    Posts
    228

    Default

    Copper based products are very nasty stuff but if you have large collections, it is a must to get rid of the rot and then start the periodical treatments with Physan.
    I'm struggling with this problem right now. We've had a damp, cool summer here and as a result, I'm getting fungus damage for the first time. The problem seems to be confined to a few intergenerics, and I've been treating it with a combination of isolation, leaf removal and cinnamon application -- primitive, I know.
    I've always hesitated to use heavy-duty chemicals because I grow inside my house. Moreover, the dogs get into everything; the one time I tried fish emulsion, the terrier knocked a pot over and rolled in the medium . Knowing that chemicals which are toxic to humans tend to be that much more poisonous to little critters has kept me away from the Physan and copper products thus far, but I don't know how much longer I can avoid them, unfortunately.

  7. #17
    OrchidTraci's Avatar
    OrchidTraci is offline Senior Member
    Join Date
    Oct 2003
    Location
    Western New York
    Posts
    1,129

    Default

    Quote Originally Posted by Cinderella
    What about inside growers? Are there concerns with pets and kids?
    I use pure need oil according to directions. I don't have pets, but I have a 3 year old who loves to touch and help with my plants. It is an all round great product and treats many ailments It is very safe, but you really have to use it and follow through and not forget applications.
    That webbing, btw, sounds like red spider mites. How do the leaves look on the plants with the webbing?

  8. #18
    OrchidTraci's Avatar
    OrchidTraci is offline Senior Member
    Join Date
    Oct 2003
    Location
    Western New York
    Posts
    1,129

    Default

    Quote Originally Posted by Persistence
    Well, an ounce of prevention and all that. fungus/bacteria come in all shapes and attack certain plants. Ever have a new growth rot? Every have a black spot that continues to grow appear? Ever have rust spots? Most are fungal problems. Physan or Consan are a cheap, non-toxic way to prevent these problems as well as a ton of others. For that collection just mix in a spray bottle and spray your plants every few weeks to once a month.
    I never knew Physan was nontoxic! Where can I get some? I've been using neem oil. It works really good, but would like to have another product to try. I'm all about products.

  9. #19
    PAGrower is offline Senior Member
    Join Date
    May 2004
    Posts
    228

    Default

    I think it depends on your definition of "nontoxic." As I said, I've never used it, so I don't have any first-hand knowledge of the side effects. However, according to the label (which is available for viewing on the Physan website if you have Adobe Acrobat), Physan is a corrosive that can cause severe skin and eye damage. That's enough to give pause to a wuss like me.

Page 2 of 2 FirstFirst 12

Similar Threads

  1. how much physan?
    By nicki in forum Orchid Ailments / The Compost Pile
    Replies: 17
    Last Post: August 1st, 2011, 01:36 PM
  2. Physan UK members question
    By bedt in forum Orchid Ailments / The Compost Pile
    Replies: 10
    Last Post: May 7th, 2010, 10:10 AM
  3. the big guns: non-physan systemics, etc.
    By kewpie in forum General Orchid Culture
    Replies: 11
    Last Post: April 18th, 2010, 08:18 PM
  4. Using Physan 20 for plants getting algae in S&H
    By Becky15349 in forum General Orchid Culture
    Replies: 3
    Last Post: May 11th, 2008, 10:36 AM
  5. Physan on a Spiking Masdie?
    By Heather in forum General Orchid Culture
    Replies: 18
    Last Post: May 27th, 2004, 09:37 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.