Modifiers matching perennial:

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

Simple categories matching alpine:

• plant,
• sector,
• flora,
• area,
• event,
• skiing,
• perennial,
• sport,
• fare,
• lake,
• flower,
• activity,