AusBonsai

For some reason, this year I have a very bad algae problem on many branches and trunks of many different species - evergreen and deciduous.
Apart from brushing hundreds of matchstick sized beances with vinegar, has anyone discovered a spray that will work?
Lime sulphur doesn't work well. I have not tried copper yet.

I spray my trunks with a mix of 50/50 water vinegar. Never had a negative affect so far
a lot quicker the cotton bud

Ken

If youve got all the money in the world you could jump onto the Kaneshin page and buy one of the spray guns they sell - as used by Bill Valavanis on one of his blog posts, although maybe more for trunk cleaning than individual branches.
Looks pretty sweet, but it is about $750 before postage.

It's everywhere!