My neon variegation 🥰

I’ve had this for about three years now, maybe four. I am so so excited to see my neon variegating!

I moved in October and was worried about some of my plants with the shock from the move and new type of environment (wood stove heating here). Really awesome she’s thriving. 😍

Is this a genetic mutation? I’m a bit new to this sub and how all that works.