Plant food is something that you feed to plants (see reference Web site for example). Food plant is a plant that you can eat.

I essentially agree with bigedsenior and Can, although this usage of 'plant foods' is relatively common, even in scientific contexts (do a google search for "plant foods" + nutrition). 'Foods from plant sources' would be absolutely clear but more wordy. Note that 'food plant' can mean a plant that produces food (although you don't necessarily eat all of it), but it can also mean a processing plant for foods. The choice between eating 'plant foods' and eating 'food plants' is thus not all that simple!

plant-based foods for human consumption

... The ideal to strive for is a diet rich in plant-based foods, ... that at least
two-thirds of dietary protein be derived from plant-based foods. ...
www.vegkitchen.com/protein.html - 23k - 27 avr 2005 - En cache - Pages similaires

BNF to reveal plant-based foods review - [ Traduire cette page ]
BNF to reveal plant-based foods review The British Nutrition Foundation (BNF) is
to hold a conference in September for the launch of its publication.
www.nutraingredients.com/ news/news-ng.asp?id=38487-bnf-to-reveal - 25k - En cache - Pages similaires


Plant food with an NPK content is nutrients for plants *before* we get to eat them ;-)

everyone's answer is of course correct, I thought you might want a different way to express plant food for humans