Simple categories matching perennial:

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

Members with property perennial:

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