Modifiers matching clover:

• perennial,
• wild,
• annual,

Simple categories matching annual:

• seedling,
• ceremony,
• grass,
• expense,
• plant,
• flower,
• wildflower,
• holiday,
• pulse,
• event,
• maintenance,
• festival,
• reward,
• herb,
• process,
• grain,
• brome,
• vine,
• effort,
• clover,
• work,
• fixture,
• bonus,
• social,
• seed,
• fruit,
• vegetable,
• contest,
• incentive,
• legume,
• cereal,
• activity,
• crop,
• theme,
• fee,
• fibre,
• forage,
• festivity,
• project,
• lake,
• host,
• charge,
• show,
• preparation,
• weed,
• fiber,
• celebration,
• system,
• occurrence,
• weeds,
• payment,
• climber,
• income,
• endeavor,
• species,
• publication,
• collection,
• invoice,