How to remove algae from mature bark?

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How to remove algae from mature bark?

Post  Lee Brindley on Mon Nov 05, 2012 1:54 pm

I collected this little yamadori hawthorn early this year and at the time it had lovely silver bark. Now its turned green and I am worried that if I try to clean it off, I will damage the mature bark platlets. Any ideas?
Thanks, Lee.




Last edited by Lee Brindley on Mon Nov 05, 2012 2:03 pm; edited 1 time in total

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How to remove algae

Post  bonsaisr on Mon Nov 05, 2012 1:58 pm

Some people spray with dilute vinegar. Best solution, give it more sun.
Iris

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Re: How to remove algae from mature bark?

Post  JimLewis on Mon Nov 05, 2012 3:56 pm

Agree with Iris. Also, water the roots, not the tree. That's likely moss, not algae.

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Re: How to remove algae from mature bark?

Post  Fore on Mon Nov 05, 2012 4:35 pm

Yeah, vinegar brushed on, and then let sit in the sun will do the trick. May need to be repeated.

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Re: How to remove algae from mature bark?

Post  Rui Marques on Mon Nov 05, 2012 4:48 pm

Does this hawthorn have his own thread?

If not, please create one. I would like to see the entire tree.

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Re: How to remove algae from mature bark?

Post  Lee Brindley on Mon Nov 05, 2012 6:06 pm

Thanks for the replies. Its been pretty dull and damp here this year, so no surprise.

Rui Marques wrote:Does this hawthorn have his own thread?

If not, please create one. I would like to see the entire tree.

Thanks for the interest Rui. Its a nice bit of material, but I don't think its really worthy of its own thread yet though.


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Re: How to remove algae from mature bark?

Post  marcus watts on Tue Nov 06, 2012 9:04 pm

hi,
i know we've had a very wet year but your soil is staying way too wet and soggy - all the liverwort on the surface shows very poor drainage and equally poor aeration. This will be making a very humid atmosphere around the tree, hence the green trunk - chances are root growth will currently be poor below the surface too - liverwort is the instant obvious indicator to bad pot conditions.

sorting the symptoms will make life easier - better pot, more exposure to sun, better soil & thetree will not go so green - dilute lime sulphar spray will kill off the trunk algae too, and bring back a silver look.

cheers Marcus

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Re: How to remove algae from mature bark?

Post  Fore on Tue Nov 06, 2012 9:24 pm

Marcus, I'm going to spray a 20% LS solution on my trees before putting them away. I've never used LS like this before, so I'm asking, will this turn my deep dark brown bark on a JBP silver? If so, does the dark color return by spring?

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Re: How to remove algae from mature bark?

Post  marcus watts on Tue Nov 06, 2012 9:30 pm

Fore wrote:Marcus, I'm going to spray a 20% LS solution on my trees before putting them away. I've never used LS like this before, so I'm asking, will this turn my deep dark brown bark on a JBP silver? If so, does the dark color return by spring?

Hi - use a weaker solution for winter spraying - 30:1 is plenty (5:1 will whiten the tree quite considerably). Totally cover the soil before starting and dont get any on evergreen foliage at all - i only use ls spray on my deciduous trees to be honest so i'm not to sure about pines & junipers - go very carefull

cheers Marcus

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Re: How to remove algae from mature bark?

Post  Rui Marques on Tue Nov 06, 2012 9:36 pm

Lee Brindley wrote: Its a nice bit of material, but I don't think its really worthy of its own thread yet though

I think it's worthy !!

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Re: How to remove algae from mature bark?

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