The further Sol went into their explanation of the different types of plant conditions, the more Zack really had to set his attention to focus on their words. It... was a lot of information he didn't know he needed, let alone would have even considered learning about before. He's trying to stay focused and follow along, but eventually the pursed lip of confusion gave way to just how complicated they could be. Man, and Aerith really made it look so easy...

He shakes his head in order to clear up the fog of new information that came filing in, but eventually once the conversation drifted more towards figuring out how to help the flower through other means... well, maybe he could be of more use than just figuring out if the flowers weren't getting enough sunlight or not.

"Dream emotion..." He repeated the phrase to let it sit in his mouth, the words giving him time to ponder over it. "You mean like the flowers emotions? The instructions aren't very clear."

He leans over the sign again to repeat the instructions as his face further furrows in confusion. "... Are we suppose to talk to them?"