Modifiers matching perennial:

• woody,
• medicinal,
• vibrant,
• tender,
• larger,
• leafy,
• ornamental,
• popular,
• exotic,
• hardy,
• simple,
• soft,
• tall,
• herbaceous,
• colorful,
• evergreen,
• subtropical,
• smaller,
• taller,
• acaulescent,
• small,
• large,
• alpine,
• tough,
• mature,
• native,
• deciduous,
• bushy,
• low,
• loving,
• grown,
• traditional,
• leggy,
• beautiful,
• common,
• tolerant,
• upright,
• familiar,
• scented,
• useful,
• tropical,
• sensitive,
• edible,

Simple categories matching medicinal:

• gas,
• preparation,
• herb,
• plant,
• treatment,
• injection,
• perennial,
• ointment,
• medicament,
• agent,
• effort,
• drug,
• substance,
• component,
• system,
• product,
• material,
• flora,
• ingredient,
• intervention,
• unit,
• opiate,
• molecule,
• protein,
• form,
• compound,
• tea,
• balm,
• constituent,
• item,
• species,
• practice,
• part,
• property,
• tablet,
• food,
• tool,
• article,
• chemical,
• therapy,
• tree,
• quality,