Yeah its showing can't grow here on my end. Didn't try reloading the script (didn't know it was a bug). I just ignored the netherwart and make all the netherwart i need through botania, cba to set up a darkroom just for netherwart.Thanks for clarification, I'll look into it.
EDIT: failing to replicate this bug.
Good to know tough that they can and are supposed to grow in sunlight.