Natural leaf aging

What's happening

Yucca grows in a rosette or cane and steadily retires its oldest, lowest leaves to put energy into new growth at the top. If only one or two of the very lowest leaves are yellowing while the rest of the plant looks firm and green, this is just the plant tidying itself up.

How to fix it

Peel or snip the spent leaf away where it meets the trunk if you prefer a cleaner look, and carry on with your normal care. Just keep an eye out that the yellowing stays limited to the oldest leaves and doesn't start climbing up into the healthy crown — that would point to a watering or root problem instead.

This is general guidance based on common symptoms; individual plants vary.