Modifiers matching perennial:

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

Simple categories matching medicinal:

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