Ron - 2065 Saturday, 25 January 2014
I have now discovered that around each sawdust discharge there are bundles of small parts of chewed fronds, ranging from 1 to 6 centimetres. They have been chewed off and taken to the base of the frond where presumably they will form part of a nest or cocoon or something
John - 2261 Wednesday, 08 July 2015
I discovered the same thing on my staghorns growing on trees! I never found the culprit, but I suspected a grub of some sort. I made a mix of pyrethrum and sprayed it on the foliage and
behind where the plant attaches itself. Within a few days whatever was in there was not active any more and there is now new fronds emerging, unchewed!
This should help you. Make the mix a tad stronger than the label says.
All the best.
Ron - 2065 Thursday, 09 July 2015
You were smarter than I John. I took mine down and submerged them in a pyrethrum mixture in a wheelie bin. It took, my wife and half the neighbourhood to get the wet ferns back up the trees!
But I had the same successful result.
Thank you for you reply,