Field-grown trident

Gustavo Martins

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I got three tridents in development. One is life yours, although I got a fungus. Probably anthracnose so the leaves look terrible. The other two are a bit delayed but I worked the roots of these so I suppose that has hampered the growth somewhat. On the other hand, I already gave my Chinese elm its first hair cut of the season two weeks ago ;)
 

markyscott

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I got three tridents in development. One is life yours, although I got a fungus. Probably anthracnose so the leaves look terrible. The other two are a bit delayed but I worked the roots of these so I suppose that has hampered the growth somewhat. On the other hand, I already gave my Chinese elm its first hair cut of the season two weeks ago ;)
Sorry to hear that - anthracnose is very common on Trident maples here on the Gulf Coast as well. Here’s an article I wrote about treating and preventing it.
https://www.facebook.com/notes/houston-bonsai-society/identifying-preventing-and-treating-anthracnose-on-the-texas-gulf-coast/1384161804947772/

I’d add that I’ve had good success treating it by spraying with Bordeaux mix at in-season concentrations. Perhaps that would help you as well. Here’s the instructions for making Bordeaux mix.
https://www.bonsainut.com/resources/dormant-season-spraying-part-2-lime-sulfur-and-bordeaux-mix.37/
It’ll leave a blue-tinged residue that will fade over the period of a couple of months.

But the main step change in dealing with this problem for me is when I became religious about dormant season spraying. I strongly encourage it.
https://www.bonsainut.com/resources/dormant-season-spraying-part-1-broadleaf-deciduous-trees.36/
https://www.bonsainut.com/resources/dormant-season-spraying-part-3-pine-trees.38/
 

Gustavo Martins

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Sorry to hear that - anthracnose is very common on Trident maples here on the Gulf Coast as well. Here’s an article I wrote about treating and preventing it.
https://www.facebook.com/notes/houston-bonsai-society/identifying-preventing-and-treating-anthracnose-on-the-texas-gulf-coast/1384161804947772/

I’d add that I’ve had good success treating it by spraying with Bordeaux mix at in-season concentrations. Perhaps that would help you as well. Here’s the instructions for making Bordeaux mix.
https://www.bonsainut.com/resources/dormant-season-spraying-part-2-lime-sulfur-and-bordeaux-mix.37/
It’ll leave a blue-tinged residue that will fade over the period of a couple of months.

But the main step change in dealing with this problem for me is when I became religious about dormant season spraying. I strongly encourage it.
https://www.bonsainut.com/resources/dormant-season-spraying-part-1-broadleaf-deciduous-trees.36/
https://www.bonsainut.com/resources/dormant-season-spraying-part-3-pine-trees.38/
I did spray lime sulphur twice during winter: The first at leaf fall, the next at leaf budding. But I suppose that didn't work that well for me. The tree already had some signs of fungus last year, albeit not as strong as this year's, but as we entered summer and temperature went up it all was gone. So I'm no sure what to do at the moment. I believe the problem is that my spring is typically very wet which is conducive of fungus attacks. I'm considering getting a place that protects the tree from the rain, but I have yet to find a solution that is aesthetically pleasing. In the meanwhile I will spray with copper oxychloride and use sulphur powder in between. I also thought about completely defoliating the tree and spray abundantly but I think I should wait a little bit longer until leaves harden a bit more and air temperature raises steadily above 15C.
 

markyscott

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I did spray lime sulphur twice during winter: The first at leaf fall, the next at leaf budding. But I suppose that didn't work that well for me. The tree already had some signs of fungus last year, albeit not as strong as this year's, but as we entered summer and temperature went up it all was gone. So I'm no sure what to do at the moment. I believe the problem is that my spring is typically very wet which is conducive of fungus attacks. I'm considering getting a place that protects the tree from the rain, but I have yet to find a solution that is aesthetically pleasing. In the meanwhile I will spray with copper oxychloride and use sulphur powder in between. I also thought about completely defoliating the tree and spray abundantly but I think I should wait a little bit longer until leaves harden a bit more and air temperature raises steadily above 15C.
Let us know if you find a solution that works for you.

- S
 

Zach2

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Scott I just wanted to say thank you for all of your awesome threads (and this one in particular). I've been reading them for a long time and you inspired me to start my first large trident project. I will try to pay it forward as I learn enough to do so.
 

markyscott

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Scott I just wanted to say thank you for all of your awesome threads (and this one in particular). I've been reading them for a long time and you inspired me to start my first large trident project. I will try to pay it forward as I learn enough to do so.
Appreciate it. I’m glad you got something out of it. It’s almost time for spring work here. I’ll post an update sometime in April.

Scott
 
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