After ducking and weaving between the students to ensure they were on the right track, Seren came to a halt in the middle of the greenhouse. Pursing her lips as she checked the time on her watch, she realised the students ought to get onto the next task... one which they would find tedious for sure. "Alright everyone, gather round," she called out to the scattered students. Of course, by gather round she meant shush and move in closer.

"To conclude our introductory lesson to herbs," and because herbs were fairly straight forward, "we're going to spend the next fifteen minutes going through and administering some general care and maintenance." Which they should all know by now. No excuses. Unless they were a first year of course...
"Just quickly, what is involved in general care, or maintenance?"

OOC: Provide only ONE aspect of care/maintenance in your response. The lesson will continue in approximately 24 hours.