Yucca plant - leaf damage
I have a yucca elephantipes placed in a sunroom where it is obviously getting substantial light and direct sun. I bought this rather large specimen about three months ago and have watered it once a month. I have noticed in the past few days that many of the leaves have black spots up to 5mm in diameter that go right through the leaf - on the underside of the leaf the edges of these spots have tiny droplets of a honey coloured liquid. A local garden centre said it is most likely stress from the plant being indoors and to relocate it outside - could be but any other ideas ?