I have several yuccas in the conservatory - NE England.
They are mature plants with good, vigorous growth.
On the older, lower leaves, there are brown areas near the edge. On the
underside near to these areas are what appear to be tiny crystals.
I have heard of scaly beetle that apparently munch on such toughies as
yuccas, aspidistras etc.
Anyone got any ideas what this might be?
I'd be grateful.
gbw at baxon.freeserve.co.uk