Preventing lichen growing on fences
Posted: March 5th, 2018, 7:53 pm
In replying to an earlier post, I mentioned that I too was looking for a way to stop lichen growing on my close-board and palisade fences. In Autumn 2017 (before the lichen growing season), I sprayed a number of close-board fence panels with 2% benzalkonium chloride but left a couple untouched as controls. As of today the results are most satisfactory: virtually no lichen on the treated panels and lots of lime-green stain on the controls. Next step will be in November this year when I will spray the same solution on 60 metres of palisade fence as soon as the hawthorn hedge immediately behind it has shed its foliage.
Until now I have been treating all my fences in late February with Cuprinol Ducksback (brushed on to palisade fence stakes) or the sprayable version (sprayed on to fence panels). Mistake; the problem with this is that it is painting over the lichen, and the result is a rougher and rougher texture - and lichen loves a bit of rough!
One warning to anyone else using this stuff, even when dilute: use wrap-around safety glasses or even swimming goggles. It is notoriously bad on the eyes.
Until now I have been treating all my fences in late February with Cuprinol Ducksback (brushed on to palisade fence stakes) or the sprayable version (sprayed on to fence panels). Mistake; the problem with this is that it is painting over the lichen, and the result is a rougher and rougher texture - and lichen loves a bit of rough!
One warning to anyone else using this stuff, even when dilute: use wrap-around safety glasses or even swimming goggles. It is notoriously bad on the eyes.