I have numerous yuccas here and most of them for the 2nd year in a row got a problem beginning of the year with a butterfly ? dropping eggs and followed by some brown worms rolling up the tips of the yuccas, then when big enough going straight for the more tender heart of the yucca.
Here are some pictures...
I dusted generously with Dipel but they continued their life cycle.
I was lucky enough this time again to see it so I basically killed all of them before the heart of the yucca would be completely destroyed.
Can anyone tell me more about this pls ?
thanks for any help !