noun
edible grass (for insects); larval food plant
Technical term used in entomology and ecology for plants that insects, especially larvae, feed on.
この蝶の幼虫の食草はカラスザンショウです。
The larval food plant of this butterfly is the Japanese pepper tree.
昆虫の食草を調べるためにフィールドワークを行った。
We conducted fieldwork to investigate the edible grasses of insects.