Modifiers matching grass:

• indigenous,
• native,
• annual,
• domesticated,
• invasive,
• weedy,
• tall,
• nonwoody,
• small,
• alien,
• out,
• perennial,
• tropical,
• larger,
• sized,
• tolerant,
• natural,
• underwater,
• monocotyledonous,
• subtropical,
• ornamental,
• favorite,
• common,
• short,
• familiar,
• wild,
• related,
• exotic,
• nonnative,
• dried,
• low,
• light,
• fine,
• coarse,
• aromatic,
• model,
• local,
• desirable,
• aggressive,
• decorative,
• artificial,
• sensitive,
• edible,
• susceptible,
• domestic,
• hard,
• nutritious,
• european,
• agricultural,
• soft,
• large,
• terrestrial,
• tough,
• weather,
• unwanted,
• new,
• dry,
• woody,
• commercial,
• important,
• thick,
• tiny,
• herbaceous,
• foreign,
• temperate,
• smaller,
• useful,

Simple categories matching perennial:

• forage,
• seed,
• herb,
• plant,
• planting,
• tree,
• grass,
• species,
• bunchgrass,
• native,
• legume,
• pest,
• crop,
• issue,
• vegetable,
• allergen,
• antigen,
• pasture,
• host,
• river,
• veggie,
• flower,
• clover,
• shrub,
• wildflower,
• vine,
• ornamental,
• group,
• fruit,
• weed,