Use art to recall many different kinds of plants (e.g. fruits and veg names). Use real plants to learn what parts of the plant different edible fruits and veg come from. Make soup from fruits and veg.
Science content (2016 curriculum):
Biology: Features, Adaptations of Living Things (K, 1, 3, 7)
Curriculum connection (2005 science topic):
Life Science: Plant Growth and Changes (grade 3)