Mold at base of bonsai :-S

[Emoska]

Hi all,

My partner's bonsai developed some algae on its base a week or so ago, potentially from over-watering.

As a result, we sprayed some vinegar over the patch to kill it. While the algae is mostly dead now, in its place has formed some really light green powdery stuff- and some white furry stuff. Both of which look like they could be mold.

Any ideas for how to treat this carefully?

Thanks!

[Bretts]

The original method of using the vinegar was to scrub with a tooth brush. I used and recommended spraying the vinegar as it was suggested to me for my very coarse barked seiju elm where the bark was too delicate for scrubbing with a tooth brush. It worked very well.
I would possibly try a tooth brush with just water on it. It may just be a residue of the dead mold. If it persisted I would then try using the tooth brush with vinegar.

[Emoska]

Thanks Bretts,

I'll certainly try and and scrub the plant tomorrow and over the next few days, with and without vinegar.

I've attached a photo too, just to show a little more of this potential 'mold', to see if that's what it actually is!