Where can I get mancozeb fungicide?

Horticulture
1

I’ve got a juniper and a blueberry that have developed fungal infections. I think that it’s phomopsis in both cases. It turns out I’m allergic to something in the copper octoanoate spray I used. Mancozeb seems to be the recommended fungicide for bonsai. The local big garden centers don’t carry it. Amazon doesn’t have any-I checked every brand name listed on the wikipedia article for mancozeb, and it’s either out of stock or they won’t ship to me in Washington state.
So, where do I buy this from? What other fungicides would you recommend?

2

Walmart carries Bonide brand. Can usually find a seller on Ebay if you are desperate. :mask:I always wear gloves and protective face covering when applying chemicals.

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3

Thank you! I can order it from Walmart, though the local stores don’t stock it.

I am definitely masking up to spray next time.

4

So it turns out that you can’t buy mancozeb in Washington. The closest state where it is sold looks like Utah. Does anyone have a favorite fungicide to recommend?

5

I was in a similar situation with shipping fungicides to California. I used this to drench my coastal redwood this winter since it was so wet and cold late into spring even. I did 2 treatments 2-3 weeks apart and haven’t had a problem since. Not sure if it would work for you or if it can be shipped to you.

Stergo MX Mefenoxam Fungicide (1 Quart) by Atticus (Compare to Subdue Maxx) – Fungus Control for Lawns, Ornamentals, Greenhouse and Nursery https://a.co/d/8F5lZj3

Danielle

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6

Thanks for recomendation. The price tag was a shock, though. This is my first year of bonsai, and I’m on a budget. The copper fungicide looks like it’s working, and it doesn’t bother me post-application. So I just need to beg someone to spray a couple trees every week.

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7

Yeah… I got lightheaded hitting the purchase button too

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8

You can check out these guys for sprays and do it yourself treatments with commercial quality products, I’ve used several products from them that I could only find on their site.

9

Thanks for sharing that link. They won’t ship to me either, though. The fine print says " Not for Sale to: AK, AZ, CA, CO, HI, ID, MT, NV, NM, NY, ND, OR, SD, WA, WY".

Copper is working well, I just need help applying it.

Apparently, there are a bunch of restricted horticulture chemicals that I can’t get here in Washington state. Hormex brand rooting compound is another example. I haven’t tracked down a complete list, though. Google is being unhelpful.

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Do you know what fungus you looking to treat? If you have identified the issue I will try to help look for a product available in your state. I work in the green industry and might find an alternative.

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11

Juniper tip blight is the common name suggested to me, which after some research I assume meansPhomopsis juniperavora or another Phomopsis species. I’m having success treating it with copper octanoate.

What I would really like to see is a list of horticultural chemicals that are restricted in WA. I know I can’t get high-concentration rooting hormone. Do have any links or search terms that would help me find that list?

Thanks.

12

I would suggest checking your local extension service for a complete list of restricted products in WA. I am in GA, I can tell you that you can treat the tip blight with the following products that should ship to you. Any generic form of thiophanate-methyl, or chlorothalonil, or propiconazole. Rotate fungicides so you do not build a resistance to a particular one.

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