Modifiers matching weeds:

• annual,
• large,
• noxious,
• agronomic,
• harmful,
• aquatic,
• broadleaf,

Simple categories matching broadleaf:

• tree,
• shrub,
• forest,
• taxon,
• evergreen,
• weed,
• plant,
• forage,
• wood,
• crop,
• organism,
• species,
• weeds,