Christmas Eve

"Professor Sprout said it might be from overwatering." Neville crouched down and carefully touched one of the curled leaves with his fingertip. "But I already reduced the amount of water last week, and it's still the same. I changed the fertilizer twice, too, and neither did anything. I'm worried there might be something wrong with the roots. Should I take it out of the pot and have a look?"

Harry crouched down and studied the plant's condition for a while.

"The way the edges are curling doesn't really look like a root problem. When roots have issues, the whole leaf usually curls inward evenly. With this one, only the edges are curling inward, while the middle is still flat. It looks more like an air humidity problem. Has the greenhouse been adjusting the temperature lately?"

Neville thought for a moment, then said, "Professor Sprout did lower the heating last week. She said a few autumn crops needed to go through a low-temperature phase before they could grow properly. The Moonlight Grass should have been placed near the heating vent, so the temperature fluctuations might be more obvious than in other places."

"Then it really might be a temperature issue. If it was only lowered by a few degrees, the curling leaves on the Moonlight Grass might just be a temporary adjustment response. Wait another week or two and see. If it doesn't improve, then consider repotting it," Harry said sharply.

Neville nodded, then picked up a thin manual from beside him, flipped to one page, and handed it to him.

"This is the cultivation manual Professor Sprout gave me. I looked through it, and there really is a section mentioning that Moonlight Grass is quite sensitive to temperature changes. If it's a normal reaction, then I don't need to rush