Simple categories matching perennial:

• herb,
• flower,
• forage,
• species,
• plant,
• ornamental,
• river,
• issue,
• grass,
• weed,
• vegetable,
• pest,
• host,
• antigen,
• tree,
• shrub,
• pasture,
• veggie,
• allergen,
• vine,
• wildflower,
• native,
• legume,
• clover,
• planting,
• seed,
• group,
• fruit,
• crop,
• bunchgrass,

Members with property perennial:

• rosemary,
• phlox,
• red_honeysuckle,
• elder,
• thyme,
• sage,
• cross_vine,
• tamarind,
• lavender,
• kangaroo_grass,
• siberian_iris,
• smooth_brome,
• quackgrass,
• ornamental_grass,
• asparagus,
• oregano,
• shrub,
• alfalfa,
• cilantro,
• banyan,
• sunflower,
• daylily,
• ephedra,
• bent,
• rhubarb,
• mangosteen,
• mint,
• phalaris_pasture,
• litchi,
• annual_bluegrass,
• mallow,
• sand_coreopsis,
• indian_grass,
• chamomile,
• thistle,
• hibiscus,
• penstemon,
• solomons_seal,
• aster,
• grape,
• southernwood,
• moonshine_yarrow,
• licorice_mint,
• phalaris,
• pet_allergen,
• candytuft,
• bamboo,
• ochna,
• hyssop,
• jack_fruit,
• ornamental_tree,
• perennial_rye,
• common_daisy,
• japanese_spirea,
• bay,
• winter_wheat,
• legume,
• mango,
• north-platte_river,
• tall_fescue,
• western_wheatgrass,
• goldenrod,
• field-bindweed_convolvulus,
• pachysandra,
• iris,
• fine_fescue,
• dill,
• oak,
• scirpus,
• false_brome,
• timothy_grass,
• lupin,
• grapevine,
• pasture_grass,
• blue_fescue,
• cocksfoot,
• mold,
• cockroach_allergen,
• tree_species,
• yarrow,
• chive,
• spear_grass,
• blues,
• mountain_mahogany,
• apple,
• rye,
• ornamental,
• spinach,
• royal_catchfly,
• royal_poinciana,
• dandelion,
• pinus,
• neem,
• shrub_rose,
• grass,
• indoor_mold,
• oregano_spread,
• jasmine,
• chickweed,
• flower,
• larrea,
• cat,
• achillea,
• amenity_tree,
• chaparral_figure,
• food_quality,
• purple_nutsedge,
• artichoke,
• breadfruit,
• wild_rye,
• cockatoo_grass,
• pineapple_sage,
• periwinkle,
• citrus,
• forest_tree,
• nasturtium,
• coconut,
• maple,
• berry_bush,
• evergreen_shrub,
• smooth_bromegrass,
• orange-balsam_thyme,
• broadleaf_evergreen,
• cassia,
• white_salvia,
• stonecrop,
• sumac,
• dahlia,
• native_millet,
• marigold,
• woody_crop,
• purple_coneflower,
• aloe,
• gamba_grass,
• daisy,
• elephant_grass,
• red_vine,
• smilax,
• blueberry,
• cosmos,
• water_apple,
• salvia,
• big_sagebrush,
• tulip,
• cherry,
• asparagus_artichoke,
• rumex,
• populus,
• zinnia,
• anemone,
• wild_lettuce,
• tagasaste,
• lemon_verbena,
• crested_wheatgrass,
• food,
• bladder_saltbush,
• marjoram,
• dallisgrass,
• poplar,
• willow,
• tall_wheatgrass,
• mexican_tarragon,
• african_daisy,
• hickory,
• horseradish,
• aspidistra,
• monkey_grass,
• pineapple,
• bindweed,
• parsley,
• slug,
• wheat_grass,
• desert_marigold,
• fennel,
• potato,
• rue,
• basil,
• forest_bluegrass,
• lucerne,
• herb,
• cotoneaster,
• sedge,
• banana,
• forest_herb,
• vine,
• wild_rose,
• columbine,
• caraway_thyme,
• lemon_thyme,
• common_saltbush,
• rose_bush,
• nematode,
• bluegrass,
• vetch,
• ryegrass,
• cockroach_antigen,
• sweat_pea,
• hay,
• sorrel,
• wisteria,
• pomelo,
• clover,
• plantain,
• silver-lace_vine,
• kiwi,
• slender_wheatgrass,
• orchid,
• wheatgrass,
• bluebell,
• cinnamon,
• forest_plant,
• pinus-edulis_pinyon,
• pokeweed,
• bush,
• sycamore_creek,
• oak_creek,
• klein_grass,
• sedum,
• cordgrass,
• saltbush,
• veldt_grass,
• lily,
• orange,
• red_fescue,
• caterpillar,
• leafy_spurge,
• hosta,
• native_grass,
• timothy,
• tea,
• chicory,
• catnip,
• fern,
• trifolium-pratense_clover,
• palm,
• cone_flower,
• peony,
• perennial_herb,
• avocado,
• spiraea,
• acacia,
• tree_crop,
• brome,
• strawberry_clover,
• rose,
• thyme_oregano,
• rambutan,
• sweet_pea,
• little_bluestem,
• onion_chive,
• carrot,
• lilac,
• geranium,
• coneflower,
• tarragon,
• almond,
• weeping_grass,
• artemisia,
• coffee,
• sweet_fennel,
• germander,
• french_tarragon,
• coarse_fescue,
• bromegrass,
• petunia,
• nimblewill,
• fescue,
• paeony,
• white_clover,
• crabgrass,
• pine,
• idaho_fescue,
• beetroot,
• holly,
• peppermint,
• lupine,
• yellow-flag_iris,
• snapdragon,
• meadow_bromegrass,
• longan,
• astragalus,
• cereal_crop,
• walnut,
• indoor_inhalant,
• lovage,
• perennial_ryegrass,
• pansy,
• pistachio,
• composite_daisy,
• clematis,
• blackberry,
• paspalum,
• crocus,
• lychnis,
• guava,
• carex,
• coriander,
• canna,
• papaya,
• rough_fescue,
• delphinium,
• passion_flower,
• big_bluestem,
• vine_crop,
• honeysuckle,
• strawberry,
• apple_malus,
• aphid,
• gladiolus,
• olive,
• ladino_clover,
• sweet_marjoram,
• thorny_asparagus,
• bunch_bluegrass,
• various_clover,
• cacao,
• familiar_tulip,
• durian,
• borneo_mahogany,
• pear,
• cashew,
• daffodil,
• cornflower,
• intermediate_wheatgrass,
• japanese,
• larkspur,
• tree,
• red,
• chrysanthemum,
• ageratum,
• rhododendron,
• ivy,
• nightshade,
• fuchsia,
• coreopsis,
• sweet_clover,
• raspberry,
• mum,
• azalea,
• wild_buckwheat,