Temple Grandin in The New York Times:
In “Planta Sapiens,” Paco Calvo, a philosopher of plant behavior, and his co-author, Natalie Lawrence, present the idea that flora are intelligent — that is, capable of cognition. In Calvo’s opinion, people pay more attention to animals than plants and this may explain why some of plants’ remarkable abilities have been overlooked. Our evolutionary history may also shape our reduced attention to the subject; plants are, after all, unlikely to attack people.
Research shows that we are more likely to focus on rapidly presented pictures of animals than those of plants. Studies also demonstrate that while children quickly learn that both humans and animals are living beings, it takes them longer to understand the same thing about plants — indeed, many children do not comprehend it until they are around 10 years old. Calvo refers to this human tendency by a term coined in the 1990s: “plant blindness.”
More here.