Fungicide safety for orchid use
 

First, this is a bit of a cross post, but I haven't gotten any feedback in the beginners section. Sorry.

There seems to be a lack of options for fungicide where I live this time of year. I tried to find copper but could not so I ended up with Spectracide immunox. The chemical in it is myclobutanil.
Has anyone used this on their orchids? If not and I decide to experiment does anyone have tips?

Thanks in advance.

I haven't used that one but I've used a couple different premixed fungicides in the spray bottles from Home Depot that were designed for use on flowering plants. Neither of them caused any harm to the orchids.

I use Hy-san, eco friendly fungicide. Whatever the orchid nurseries use.

Hi, Firstly, do you know that you need a fungicide ? What is the problem you are trying to solve? There are quite a few fungicides available to orchid people, however, some target different pathogens. Phyton 27, Physan, Dithane M-45 and a host of others are good for taking care of most of the problems. They are all available online, too!

I use Dithane M-45 as a fungicide and Physan as a preventive.

As a preventive measure, I highly recommend Zero-Tol. It is a great broad-spectrum, contact algaecide/fungicide, and exhibits no phytotoxicity whatsoever.

I am having an issue with black root tips. A fungus was the only theory I got that I haven't already checked for. here is a link to the original thread: http://www.orchidboard.com/community...root-tips.html

If anyone in this section has any other ideas I would love to hear them.

Thanks for all the input so far!

I had a problem with root tips turning black and turned out to be the water. Went to ro and problem solved. Your water may be soft but you can still have high TDS. You need to find out what your TDS is. TDS meter aren't that pricey and give you good feed back on what to do.

Do you have a water softer?

No, no softener, it comes that way out of the tap. I do not know my tds, that's one of the few water tests I don't have. I'll see about getting one.
With as much as it has been raining I have not been watering much but the problem has become much more widespread.

I tried the spray on 2 orchids that I'm not in love with, we'll see in a couple of days how safe it is.

Sounds like you have your hands full!!!! I don't miss those days.

Words of caution..... Moisture will spread a fungal problem like wild fire. You may have to take extreme measures now to avoid a disaster.... I feel your pain.... No fun.....