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lewis_milnes
White Belt
Joined: 12 Apr 2008
Posts: 1
Location: UK
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 Posted: Sat Apr 12, 2008 7:02 pm Post subject: White mould-like residue on soil? |
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Hi I am new to bonsai care, I have an 8 year-old Chinese Elm. Within the last two weeks a white mould-like residue has formed on areas of the surface of the soil, I have raked it away a number of times, only for it return within a couple of days!
I would appreciate any help anyone could offer me on this matter!Many thanks!
Lew |
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Stymie
Black Belt
Joined: 18 Aug 2004
Posts: 10011
Location: My head feels as though it's in a vice. S.Yorks.UK Zone 8a
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| Posted: Sat Apr 12, 2008 8:12 pm Post subject: Re: White mould-like residue on soil? |
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Does it appear at the bottom of the tree bark and on the edges of the pot?
If it is mould it may succumb to a dose of copper based fungicide.
If it is residue it may be undisolved salts of fertilizer or of other origins. A dilute acid like tea will sometimes re-disolve these salts. Fertilize less or change to an ericaceous formula for another remedy.
Come back with your answer. This is always interesting to other people. |
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freezingcold
Orange Belt
Joined: 01 Jun 2007
Posts: 361
Location: Planet Earth
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| Posted: Mon Apr 14, 2008 6:58 am Post subject: Re: White mould-like residue on soil? |
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could it be hard water?
if I use water from my cold tap at home everything gets covered in white "mould/salts" like substance I rake it in but it just comes back again after watering. |
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ferns60
White Belt
Joined: 22 Mar 2008
Posts: 20
Location: Isle of man
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| Posted: Mon Apr 14, 2008 7:43 pm Post subject: Re: White mould-like residue on soil? |
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just a passing point on the Chinese elms i have, outside ok
brought them in for a spell and they had some white mildew
form on the soil,they dont like closed spaces with little air circulation, put them back out and they were fine. |
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