Simple categories matching perennial:

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

Members with property perennial:

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