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Saving heat damaged Chinese Elm

  • eileendover
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Saving heat damaged Chinese Elm was created by eileendover

Posted 6 years 6 days ago #46487
My Chinese Elm bonsai is not doing well at the moment. It normally lives beside my work desk near a well lit window with a bit of shade cover from the trees outside, but I had 3 weeks off over Christmas so I brought my bonsai home. I put it outside under a covered balcony in a spot where it would only get indirect sunlight. I watered it before I went away for a few days, but unfortunately we had some extremely high temperatures and all the leaves shrivelled up and died! I watered it diligently when I returned home but there was no improvement.

I'm back at work now so I can give my bonsai the care and attention it's used to receiving. Action I've taken so far is to transfer the bonsai into a pot with two drainage holes instead of one. The pot it was in had only one drainage hole and I feel like it was holding water for too long. The roots were dark but not slimy or rotted so I think I made the right decision to improve drainage. I didn't prune the roots at all, I just gently teased them out and got rid of all the old soil. I re-potted the bonsai using the exact same potting mix - trying not to stress the tree out even further by changing too many things at once - but I added a few small pieces of charcoal around the root base. I'm hoping this will keep the roots a little cooler and assist with drainage so the roots don't actually start to rot. I also removed all the leaves as they were crispy brown and way beyond saving - they fell off as I brushed my finger past them. The branches are still flexible and not completely dried out so there's a glimmer of hope. I didn't do any pruning or fertilising as I understand the tree is in preservation mode and now is not the time to encourage new growth.

Is there anything else I can do to help my baby recover? Do you think adding charcoal pieces to the soil was the right decision? I know pumice is supposed to be better but I had the charcoal handy. Any thoughts or suggestions are appreciated.
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Replied by eileendover on topic Saving heat damaged Chinese Elm

Posted 6 years 6 days ago #46488
Also to add, I'm located in Sydney Australia so it's the peak of summer at the moment. Just in case anyone was wondering why I'm dealing with heat damage :)
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Replied by eileendover on topic Saving heat damaged Chinese Elm

Posted 6 years 6 days ago #46490
Photo of my Chinese Elm in happier times vs today :(

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Last Edit:6 years 6 days ago by eileendover
Last edit: 6 years 6 days ago by eileendover.

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  • leatherback
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Replied by leatherback on topic Saving heat damaged Chinese Elm

Posted 6 years 5 days ago #46491
nope. now you play the waiting game..

Emjoy summer. We just had a month of continuous rain (100% of the monthly precipitation has already fallen). Temps to drop by the weekend to frost. Jealous of everyone in summer right now.
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Replied by eileendover on topic Saving heat damaged Chinese Elm

Posted 6 years 5 days ago #46496
Thanks for the confirmation. The waiting game sucks, but I guess bonsai in general is one big waiting game!

If it does miraculously pull through and start putting out new leaves / shoots, how long should I wait before giving it fertiliser (I use worm tea straight from the worm farm we have at work) or pruning it?
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Replied by leatherback on topic Saving heat damaged Chinese Elm

Posted 6 years 5 days ago #46497
I would wait untill you see real growth. So say,5cm growth on the branches.
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