The plants also have brown spots and are dying on the end. I have sprayed with eco oil to no avail. The tracks on the leaves are similar to leaf miner.
11 September 2012 04:26 AM
As well as the staghorn fern beetle that attacks stags and elks, there is also a caterpillar that does damage these plants. There is no product registered to control these pests. The best way is by early detection and hand removal. The eggs of the beetle can be found near the tips of the fronds. Clip off and destroy the damaged fronds. Look for the adult beetle and hand remove them. Early morning is the best time.