Dying Chinese Elm (Ulmus Parvifolia)

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Dying Chinese Elm (Ulmus Parvifolia)

Post  Hulmus on Fri Jul 21, 2017 10:32 am

Hello, I have a bonsai since January 2017. I think it is Chinese elm (Ulmus Parvifolia). It has many diseases. I need HELP!!

About 2 months ago, it's started to shed it many leaves. First a leaf would get black spots and then turn yellow, then fall down. I think it was black spot disease. (Picture A's)

Later, about a month ago it's started to get white spots on some leaves and on the same leaves, it started having tiny black spotted white insects. I think these are two spotted spider mites. (Picture B's)

After seeing the insects I sprayed Mancozeb (fungisit) and Acetamiprid (pesticide). This did not improve the insects situation but it's had positive effect on black spot disease.

For the last 2 weeks I have been using NeemAzal on it's leaves and soil, once a week. It killed about the insects %80 percent, but it still has some insects. I sprayed water and ciggarette ashes mix once. And I'm waiting to see the results.

Last week I saw little white round insects on its soil. (I haven't picture of them) I treated this with Acetamiprid on its soil once.

See Picure C's for the most recent status of my bonsai.
Now, tips of some of its leaves turn brownish and fall down.
Most of its leaves now seem to be covered in dust. It's new buds develıp a little and then change in to darker colour and fall off.
Now It shed most many of leaves and it trubk is covered with a white layer.

What do you think? What should I do?? Help me...










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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  kevin stoeveken on Fri Jul 21, 2017 5:35 pm

spray on fungicides and insecticides need repeat applications...

generally 3 treatments about 10 days apart.

however, using systemic remedies will work from the inside out and generally only need to be applied once or twice per growing season.

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  Hulmus on Fri Jul 21, 2017 8:27 pm

Thank you for your answer. But Which insecticide or fungicide should I use? Can you help me?

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  bilbo on Sat Jul 22, 2017 12:30 am



I hope nobody gets mad at me for posting a video.
Please let me know if this is a no no.

This may not be directly addressing all your specific problems, but it is a good general health video and he does mention a systemic towards the end.

I've not used it (yet) but I just happened to see this video yesterday.

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  M. Frary on Sat Jul 22, 2017 11:11 am

It looks like the soil is too wet.
Is it outside?

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  Hulmus on Sat Jul 22, 2017 10:01 pm

İt's look like wet beacuse I take a photo after give water to my bonsai. So is anybody help me? What should I do? Which insecticide or pesticide or maybe changing a pot? Please help me? What is that white bug in soil? How can I get rid of it? Many questions...

Thank you

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  M. Frary on Sun Jul 23, 2017 1:02 pm

Get it outside.

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dying hinese elm

Post  geoffm5eay on Sun Jul 23, 2017 2:28 pm

The "bug" on not in the soil is either mealy bug or white fly but the soil does look very wet. This species is hardy and must be outside especially where you are. Do not re pot there is no need. Learn how to water, it is the most fundamental of all things that need to be learned. Check the soil every day and water when the soil is almost dry. Put a drop and I mean drop of washing up liquid in a sprayer and this will kill the insects. Make sure you spray under the leaves. Do this every 10 days.
This should get rid of the insects.
What fertiliser are you using and how often?

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  bilbo on Mon Jul 24, 2017 12:25 am

Are you using tap water (from your faucet) on this tree?

Looks like what might also be some sign of mineral salts build up on the trunk base and top of the soil.

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  kevin stoeveken on Mon Jul 24, 2017 6:52 pm

a very small bit of research would tell you what type of treatments are available in Turkey and so i can not tell you that.
but, most garden store varieties would work BUT READ THE LABEL to make sure it is safe for your tree.

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  Hulmus on Sat Aug 12, 2017 11:45 pm

Last status is it. It has new buds but they turn to brown. They become rotten. Why? I change pot. And cut %30 of rotten roots. I want to save buds!!!

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  Hulmus on Mon Aug 14, 2017 6:57 am

??

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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  Khaimraj Seepersad on Mon Aug 14, 2017 4:42 pm

Why have you not taken it to a Bonsai Nursery / Plant Nursery or Bonsai club to be looked at ?
Until.
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Re: Dying Chinese Elm (Ulmus Parvifolia)

Post  Hulmus on Mon Aug 14, 2017 7:26 pm

I am at Turkey unluckily. There is no bonsai hospital.

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