Adding Fungicides to My Orchid Maintenance

[D&S Mabel]

I need some help with adding a fungicide to my orchid regiment.

Recent outbreak of black rot tells me that I need to add a systemic fungicide to my orchid maintenance program to stop future outbreaks. On and off, I have experienced this fungus taking a new shoot or leaf at random and on a one-plant scale but this past month I have had to deal with a large, multi-plant outbreak.

From other postings on this board and info gathered elsewhere, I have decided to add a dose of THIOMYL Systemic Fungicide to my orchid maintenance program. I THINK I need to mix this in a pump sprayer (diluted per the label) and spray it MONTHLY on each plant and potting mix. This should be done right AFTER watering the plants. Am I going in the right direction so far? Can / should I spray the fungicide like this?

If my thinking up to now is good, I have a few questions I have not been able to find answers to yet:
1) How long should I spray each plant?
2) Should I also spray with a topical fungicide like Physan?
3) If yes on the topical, can I mix it with the systemic to spray at the same time? Does this change dilution any if I mix them?
4) I have this fungus problem mostly during our rainy season. Should I still spray during the “off” months?

Any feedback/guidance is appreciated.

[Swamper]

Mabel I wish I could answer you without referring to the bottle but...I can't. I do know that treating and preventing are sprayed and or treated differently if that makes sense. I spray weekly to prevent fungus among us. I also spray insecticides weekly and every 3 days on my spiking vandas.. I suspect that maybe you are trying to make one serving of everything mixed up? Im not sure, on the one hand you mention adding a maintanace program and then later you mention you already? have a fungus problem. Sorry Im not much help but at least I bumped up your thread. good luck.