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-   -   Fungicide in the UK (http://www.orchidboard.com/community/pests-and-diseases/94100-fungicide-uk.html)

MiniatureOrchids 05-08-2017 04:33 PM

Fungicide in the UK
 
I've got a bit of grey fungus/mold on the roots of a phalaenopsis, and I want to treat it with a fungicide. However, whilst everyone mentions "use a fungicide" all over the place when talking about orchids, it's nigh-impossible to find out which ones are suitable and in what dosage. :)

I can't use cinnamon, as the fungus is on the roots, and the cinnamon will dessicate the roots and cause more trouble, probably.

A lot of people mention Physan 20, but it's no longer available for sale in the UK.

I've heard some people say any fungicide suitable for roses is suitable for orchids - is that correct? If I get something like Bayer Fungus Fighter in it's pre-mixed spray form, can I use that - and can I use it directly, or do I need to dilute it?

Recommendations please of brands and exact mix strength would be really appreciated. :)

bil 05-08-2017 06:04 PM

See if you can get Mancozeb. I find it to be
very effective and safe on orchids.

dangerouseddy 05-08-2017 06:20 PM

I've used Bayer rose clear and fungus fighter on my orchids and haven't seen any negative effects.

estación seca 05-08-2017 09:03 PM

Can you post a photo? Fungus doesn't usually grow on living Phal roots.

MiniatureOrchids 05-09-2017 01:42 AM

I've removed the end of the root which had the fungus now, and disposed of it. It was about 5-8mm of root covered with grey downy fungus.

estación seca 05-09-2017 02:11 AM

The fungus-covered portion was probably already dead. The fungus was probably one that feeds on dead tissue. The fuzzy, hairy fungi on orchids are like that.

MiniatureOrchids 05-09-2017 03:24 AM

Interesting, thanks. It was definitely a living root - it was green where I cut the fungused part out, and still fleshy. If the tip had died, then there's the risk of the fungus spreading.

Anyway, back on topic - what brand fungicides do people in the UK use?


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