What a Plant Knows

Some plants can even differentiate the smell of a tomato from the smell of wheat.

Think about this: plants see you.
In fact, plants monitor their visible environment all the time. Plants see if you come near them; they know when you stand over them. They even know if you’re wearing a blue or a red shirt. They know if you’ve painted your house or if you’ve moved their pots from one side of the living room to the other.

She turns, always, towards the sun, though her roots hold her fast, and, altered, loves unaltered.
– Ovid, Metamorphoses