I've got a yucca plant that's a little over a year old and it started to show signs of disease. I've recently repotted it and inspected the roots for rot. They looked and felt normal so I don't think it's rot. I don't know much about this plant other than it doesn't like to be over watered and it likes a lot of indirect light. So it's in our office next to a sunny window and we water it every 2-3 weeks. Pictures are attached at the link below. Any insight is appreciated.
Here is a link that might be useful: Yucca plant pics