nover18
Mame
Has anyone used Mancozeb on Japanese maples? The label does not list maples and wondering if this is ok to apply to the foliage. If so what rate of application?
Mancozeb for Japanese maples
- Thread starter nover18
- Start date
nover18
Mame
Anthracnose
"The following products are labeled for use against anthracnose of maple: copper hydroxide + mancozeb, mancozeb and propiconazole"
https://ag.umass.edu/landscape/fact-sheets/maple-anthracnose
hemmy
Omono
I sprayed it on emerging second flush of leaves on JM saplings. They are in morning sun, afternoon shade. No ill effects from the spray.
MrFancyPlants
Masterpiece
I have used it and it didn't kill my maple. It did leave some ugly looking residue on the leaves, but I think better than the ugly anthracnose would cause. I mixed up a batch of mancozeb for a sickly looking juniper and applied it to a maple with anthracnose symptoms. I used a bayer 3 in 1 systemic on the maple perviously and it did seem to halt the progression of the dieback, but I had the mancozeb mixed up and figure alternating products was a good idea. I think next year I'll use the mancozeb in the spring and fall use the 3-1 once the leaves are out.
markyscott
Imperial Masterpiece
I’ve used Mancozeb on both trident and Japanese maples. For me, it has been safe and I believe it has been more effective at controlling anthracnose than daconil, but not as effective as a disciplined program of dormant season spraying and preventative action taken during the growing season.
Scott
Scott
D
Deleted member 21616
Guest
Hi Scott,
Can i please ask what you spray on your Maples during the doormant season, and how often?
markyscott
Imperial Masterpiece
Here’s an article I wrote for the club that describes my practice.
https://www.facebook.com/notes/houston-bonsai-society/dormant-spraying/1335155469848406/
And here’s a video that walks you through the how, when and why.
Hi-Yield lime sulfur is no longer manufactured, but I’ve determined that Davis Pet Dip is the same compound at the same concentration. I posted the Hi-Yield label here:
https://www.bonsainut.com/threads/h...-been-banned-in-california.24171/#post-383047
I posted a comparison between products here.
https://www.bonsainut.com/threads/h...banned-in-california.24171/page-3#post-384367
Hope that helps
Scott
D
Deleted member 21616
Guest
@markyscott wow, thank you!!
Very much appreciate all of the references!
Very much appreciate all of the references!
markyscott
Imperial Masterpiece
Thanks! Do you use lime sulfur only as a dormant spray? Here in the Bay Area fungus has been bad this summer (mostly powdery mildew).
markyscott
Imperial Masterpiece
The label I posted describes in season concentrations you can use when the tree is in leaf. It’s very effective against powdery mildew. I’ve just been religious about dormant season application and so have had far fewer problems with fungal diseases in my collection. I don’t spray pines and junipers with it, so I keep up with spraying pines for needlecast, but that’s all I’ve had to spray in terms of fungicides this year. I’d say my use of that stuff has dropped 90%.
S
badatusernames
Omono
I'm going to spray my junipers with mancozeb in the next day or two and had been planning to spray all my plants with it. I saw Bjorn listed it as specifically for juniper tip blight - are there any species that I should be aware of that do poorly with mancozeb? Should I stick to spraying it only on my junipers as a preventative against tip blight, or is it a beneficial preventative for other species as well?
Sounds like the use case here was treating something that had already gotten into the tree, so curious what people's thoughts are.
Sounds like the use case here was treating something that had already gotten into the tree, so curious what people's thoughts are.
Brian Van Fleet
Pretty Fly for a Bonsai Guy
I have had pretty good results with it overall. My hawthorn still ended up with CAR this year, but that’s par for the course.
badatusernames
Omono
Thanks!
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