Grass itself isn't a state of matter. It's a living organism made up of many different materials. However, the materials that make up grass *are* in states of matter:

* Solid: The majority of grass is solid - the stems, leaves, and roots are all solid structures.

* Liquid: Grass contains water, which is a liquid.

* Gas: Grass also contains gases like oxygen and carbon dioxide, which are involved in respiration and photosynthesis.

So, while grass isn't a single state of matter, it is composed of multiple states of matter working together to form a complex living organism.