- Abutilon abutiloides – Shrubby Indian Mallow
- Abutilon incanum – Pelotazo
- Abutilon parvulum – Dwarf Indian Mallow
- Abutilon reventum – Yellowflower Indian Mallow
- Acacia angustissima – Prairie Acacia
- Acacia constricta – Whitethorn Acacia
- Acacia greggii – Catclaw Acacia
- Acalypha phleoides – Shrubby Copperleaf
- Acer grandidentatum – Bigtooth Maple
- Acourtia nana – Dwarf Desertpeony
- Acourtia wrightii – Brownfoot
- Adenophyllum porophylloides – San Felipe Dogweed
- Agastache wrightii – Sonoran Giant Hyssop
- Agave chrysantha – Goldenflower Century Plant
- Agave palmeri – Palmer's Century Plant
- Agave schottii – Schott's Century Plant
- Allionia choisyi – Annual Windmills
- Allionia incarnata – Trailing Windmills
- Almutaster pauciflorus – Alkali Marsh Aster
- Ambrosia ambrosioides – Ambrosia Leaf Bur Ragweed
- Ambrosia confertiflora – Weakleaf Bur Ragweed
- Ambrosia cordifolia – Tucson Bur Ragweed
- Ambrosia deltoidea – Triangle Bur Ragweed
- Anaphalis margaritacea – Western Pearly Everlasting
- Anemone tuberosa – Tuber Anemone
- Anemopsis californica – Yerba Mansa
- Anisacanthus thurberi – Thurber's Desert Honeysuckle
- Apodanthera undulata – Melon Loco
- Aquilegia chrysantha – Golden Columbine
- Arabis perennans – Perennial Rockcress
- Arceuthobium vaginatum – Pineland Dwarf Mistletoe
- Arctostaphylos pungens – Pointleaf Manzanita
- Argemone pleiacantha – Southwestern Pricklypoppy
- Aristolochia watsonii – Watson's Dutchman's Pipe
- Arundo donax – Giant Reed
- Asclepias angustifolia – Arizona Milkweed
- Asclepias asperula – Spider Milkweed
- Asclepias linaria – Pineneedle Milkweed
- Asclepias nyctaginifolia – Mojave Milkweed
- Asclepias tuberosa – Butterfly Milkweed
- Astrolepis cochisensis – Cochise Scaly Cloakfern
- Atriplex canescens – Fourwing Saltbush
- Baccharis salicifolia – Mule-fat
- Baccharis sarothroides – Desertbroom
- Bahia absinthifolia – Hairyseed Bahia
- Baileya multiradiata – Desert Marigold
- Bebbia juncea – Sweetbush
- Bidens aurea – Arizona Beggarticks
- Boerhavia coccinea – Scarlet Spiderling
- Boerhavia scandens – Climbing Wartclub
- Bouvardia ternifolia – Firecrackerbush
- Brickellia coulteri – Coulter's Brickellbush
- Caesalpinia gilliesii – Bird-of-paradise Shrub
- Calliandra eriophylla – Fairyduster
- Calochortus ambiguus – Doubting Mariposa Lily
- Calochortus kennedyi – Desert Mariposa Lily
- Calyptocarpus vialis – Straggler Daisy
- Camissonia californica – California Suncup
- Carlowrightia arizonica – Arizona Wrightwort
- Carnegiea gigantea – Saguaro
- Carphochaete bigelovii – Bigelow's Bristlehead
- Castilleja austromontana – Rincon Mountain Indian Paintbrush
- Castilleja integra – Wholeleaf Indian Paintbrush
- Castilleja lanata – Sierra Woolly Indian Paintbrush
- Castilleja tenuiflora – Santa Catalina Indian Paintbrush
- Ceanothus fendleri – Fendler's Ceanothus
- Ceanothus greggii – Desert Ceanothus
- Celtis ehrenbergiana – Spiny Hackberry
- Celtis laevigata var. reticulata – Netleaf Hackberry
- Cephalanthus occidentalis – Common Buttonbush
- Chamaesaracha coronopus – Greenleaf Five Eyes
- Chamaesyce hyssopifolia – Hyssopleaf Sandmat
- Chamaesyce polycarpa – Smallseed Sandmat
- Chilopsis linearis – Desert Willow
- Cirsium arizonicum – Arizona Thistle
- Cirsium neomexicanum – New Mexico Thistle
- Cirsium ochrocentrum – Yellowspine Thistle
- Claytonia perfoliata – Miner's Lettuce
- Clematis drummondii – Drummond's Clematis
- Cnidoscolus angustidens – Mala Mujer
- Comandra umbellata – Bastard Toadflax
- Commelina dianthifolia – Birdbill Dayflower
- Commelina erecta – Whitemouth Dayflower
- Conoclinium dissectum – Palmleaf Thoroughwort
- Convolvulus arvensis – Field Bindweed
- Coursetia glandulosa – Rosary Babybonnets
- Crossosoma bigelovii – Ragged Rockflower
- Crotalaria pumila – Low Rattlebox
- Cryptantha spp. – Cryptantha
- Cucurbita digitata – Fingerleaf Gourd
- Cucurbita foetidissima – Missouri Gourd
- Cuscuta spp. – Dodder
- Cylindropuntia acanthocarpa – Buck-horn Cholla
- Cylindropuntia arbuscula – Arizona Pencil Cholla
- Cylindropuntia bigelovii – Teddybear Cholla
- Cylindropuntia fulgida – Jumping Cholla
- Cylindropuntia leptocaulis – Christmas Cactus
- Cylindropuntia spinosior – Walkingstick Cactus
- Cylindropuntia versicolor – Staghorn Cholla
- Cymopterus multinervatus – Purplenerve Springparsley
- Dalea albiflora – Whiteflower Prairie Clover
- Dalea candida – White Prairie Clover
- Dalea formosa – Featherplume
- Dalea nana – Dwarf Prairie Clover
- Dalea pringlei – Pringle's Prairie Clover
- Dalea pulchra – Santa Catalina Prairie Clover
- Dalea purpurea – Purple Prairie Clover
- Dasylirion wheeleri – Common Sotol
- Datura wrightii – Sacred Thorn-apple
- Delphinium scaposum – Tall Mountain Larkspur
- Dichelostemma capitatum – Bluedicks
- Dicliptera resupinata – Arizona Foldwing
- Dieteria canescens – Hoary Tansyaster
- Dodonaea viscosa – Florida Hopbush
- Dryopetalon runcinatum – Rockmustard
- Echeandia flavescens – Torrey's Craglily
- Echinocereus fasciculatus – Pinkflower Hedgehog Cactus
- Echinocereus rigidissimus – Rainbow Hedgehog Cactus
- Echinocereus spp. – Claret-cup Cactus
- Encelia farinosa – Brittlebush
- Encelia frutescens – Button Brittlebush
- Ephedra trifurca – Longleaf Jointfir
- Epilobium canum ssp. latifolium – Hummingbird Trumpet
- Equisetum hyemale – Scouringrush Horsetail
- Ericameria laricifolia – Turpentine Bush
- Eriogonum fasciculatum – Eastern Mojave Buckwheat
- Erysimum capitatum – Sanddune Wallflower
- Erythrina flabelliformis – Coralbean
- Eschscholzia californica ssp. mexicana – California Poppy
- Escobaria vivipara – Spinystar
- Euphorbia radians – Sun Spurge
- Euphorbia schizoloba – Mojave Spurge
- Evolvulus arizonicus – Wild Dwarf Morning-glory
- Evolvulus nuttallianus – Shaggy Dwarf Morning-glory
- Fallugia paradoxa – Apache Plume
- Fendlera wrightii – Wright's Fendlerbush
- Ferocactus wislizeni – Candy Barrelcactus
- Fouquieria splendens – Ocotillo
- Fraxinus velutina – Velvet Ash
- Froelichia arizonica – Arizona Snakecotton
- Funastrum cynanchoides – Fringed Twinevine
- Gaillardia × grandiflora 'Fanfare' – Gaillardia 'Fanfare'
- Gaillardia pinnatifida – Red Dome Blanketflower
- Gaillardia pulchella – Firewheel
- Gaura coccinea – Scarlet Beeblossom
- Geranium caespitosum – Pineywoods Geranium
- Geranium richardsonii – Richardson's Geranium
- Glandularia bipinnatifida – Dakota Mock Vervain
- Glandularia gooddingii – Southwestern Mock Vervain
- Gomphrena caespitosa – Tufted Globe Amaranth
- Gomphrena sonorae – Sonoran Globe Amaranth
- Gossypium thurberi – Thurber's Cotton
- Grusonia kunzei – Devil's Cholla
- Guardiola platyphylla – Apache Plant
- Guilleminea densa – Small Matweed
- Gutierrezia serotina – Late Snakeweed
- Haplophyton crooksii – Cockroachplant
- Heracleum maximum – Common Cowparsnip
- Herissantia crispa – Bladdermallow
- Heuchera sanguinea – Coralbells
- Hibiscus coulteri – Desert Rosemallow
- Hibiscus denudatus – Paleface
- Hoffmannseggia glauca – Indian Rushpea
- Hydrocotyle ranunculoides – Floating Marshpennywort
- Hymenoclea salsola – Burrobrush
- Hymenothrix wrightii – Wright's Thimblehead
- Hyptis emoryi – Desert Lavender
- Isocoma tenuisecta – Burroweed
- Jacquemontia pringlei – Pringle's Clustervine
- Janusia gracilis – Slender Janusia
- Jatropha cardiophylla – Sangre de Cristo
- Jatropha macrorhiza – Ragged Nettlespurge
- Juglans major – Arizona Walnut
- Juniperus deppeana – Alligator Juniper
- Juniperus monosperma – Oneseed Juniper
- Justicia californica – Beloperone
- Justicia longii – Longflower Tube Tongue
- Krameria erecta – Littleleaf Ratany
- Krameria grayi – White Ratany
- Larrea tridentata – Creosote Bush
- Lasianthaea podocephala – San Pedro Daisy
- Lesquerella gordonii – Gordon's Bladderpod
- Lesquerella purpurea – Rose Bladderpod
- Linum lewisii – Lewis Flax
- Lithospermum cobrense – Smooththroat Stoneseed
- Lobelia cardinalis – Cardinalflower
- Lotus rigidus – Shrubby Deervetch
- Lycium pallidum – Pale Desert-thorn
- Lythrum californicum – California Loosestrife
- Macroptilium gibbosifolium – Variableleaf Bushbean
- Macrosiphonia brachysiphon – Huachuca Mountain Rocktrumpet
- Malva parviflora – Cheeseweed Mallow
- Mammillaria grahamii – Graham's Nipple Cactus
- Mammillaria heyderi var. macdougalii – Macdougal's Nipple Cactus
- Marah gilensis – Gila Manroot
- Marina parryi – Parry's False Prairie-clover
- Marrubium vulgare – Horehound
- Maurandella antirrhiniflora – Roving Sailor
- Mecardonia procumbens – Baby Jump-up
- Medicago lupulina – Black Medick
- Medicago sativa – Alfalfa
- Melampodium leucanthum – Plains Blackfoot
- Melilotus officinalis – Yellow Sweetclover
- Melinis repens – Rose Natal Grass
- Menodora scabra – Rough Menodora
- Mentzelia multiflora – Adonis Blazingstar
- Mimosa aculeaticarpa var. biuncifera – Catclaw Mimosa
- Mimosa dysocarpa – Velvetpod Mimosa
- Mimulus cardinalis – Scarlet Monkeyflower
- Mimulus guttatus – Seep Monkeyflower
- Mirabilis laevis – Desert Wishbone-bush
- Mirabilis linearis – Narrowleaf Four O'Clock
- Mirabilis longiflora – Sweet Four O'Clock
- Modiola caroliniana – Carolina Bristlemallow
- Mortonia scabrella – Rio Grande Saddlebush
- Nasturtium officinale – Watercress
- Nerium oleander – Oleander
- Nicotiana glauca – Tree Tobacco
- Nicotiana obtusifolia – Desert Tobacco
- Nolina microcarpa – Sacahuista
- Notholaena standleyi – Star Cloak Fern
- Nothoscordum bivalve – Crowpoison
- Nymphaea mexicana – Yellow Waterlily
- Oenothera caespitosa – Tufted Evening Primrose
- Oenothera elata – Hooker's Evening Primrose
- Oenothera rosea – Rose Evening Primrose
- Olneya tesota – Desert Ironwood
- Opuntia aciculata – Chenille Pricklypear
- Opuntia engelmannii – Cactus Apple
- Opuntia ficus-indica – Barbary Fig
- Opuntia microdasys – Angel's-wings
- Opuntia santa-rita – Santa Rita Pricklypear
- Oxalis corniculata – Creeping Woodsorrel
- Parkinsonia aculeata – Jerusalem Thorn
- Parkinsonia florida – Blue Paloverde
- Parkinsonia microphylla – Yellow Paloverde
- Parthenium incanum – Mariola
- Passiflora caerulea – Bluecrown Passionflower
- Passiflora mexicana – Mexican Passionflower
- Pellaea truncata – Spiny Cliffbrake
- Peniocereus greggii – Nightblooming Cereus
- Pennisetum setaceum – Crimson Fountaingrass
- Penstemon barbatus – Beardlip Penstemon
- Penstemon eatonii – Firecracker Penstemon
- Penstemon palmeri – Palmer's Penstemon
- Penstemon parryi – Parry's Beardtongue
- Penstemon pseudospectabilis – Desert Penstemon
- Penstemon stenophyllus – Sonoran Beardtongue
- Penstemon strictus – Rocky Mountain Penstemon
- Penstemon subulatus – Hackberry Beardtongue
- Phacelia arizonica – Arizona Phacelia
- Phacelia distans – Distant Phacelia
- Phaseolus parvulus – Pinos Altos Mountain Bean
- Phemeranthus aurantiacus – Orange Flameflower
- Phlox tenuifolia – Santa Catalina Mountain Phlox
- Phoradendron californicum – Mesquite Mistletoe
- Phoradendron juniperinum – Juniper Mistletoe
- Phoradendron macrophyllum – Colorado Desert Mistletoe
- Physalis hederifolia – Ivyleaf Groundcherry
- Pinus discolor – Border Pinyon
- Platanus wrightii – Arizona Sycamore
- Plumbago scandens – Doctorbush
- Polygala alba – White Milkwort
- Polygala barbeyana – Blue Milkwort
- Polygala macradenia – Glandleaf Milkwort
- Polygala obscura – Velvetseed Milkwort
- Polygala scoparioides – Broom Milkwort
- Populus fremontii – Fremont Cottonwood
- Populus tremuloides – Quaking Aspen
- Porophyllum gracile – Slender Poreleaf
- Portulaca suffrutescens – Shrubby Purslane
- Potentilla thurberi – Scarlet Cinquefoil
- Proboscidea althaeifolia – Desert Unicorn-plant
- Prosopis velutina – Velvet Mesquite
- Pseudocymopterus montanus – Alpine False Springparsley
- Psilostrophe cooperi – Whitestem Paperflower
- Psoralidium tenuiflorum – Slimflower Scurfpea
- Purshia stansburiana – Stansbury Cliffrose
- Quercus gambelii – Gambel Oak
- Quincula lobata – Chinese Lantern
- Ratibida columnifera – Upright Prairie Coneflower
- Rhus lancea – African Sumac
- Rhus trilobata – Skunkbush Sumac
- Rhynchosida physocalyx – Buffpetal
- Rivina humilis – Rougeplant
- Robinia neomexicana – New Mexico Locust
- Rosa woodsii – Woods' Rose
- Ruellia nudiflora – Violet Wild Petunia
- Rumex hymenosepalus – Canaigre Dock
- Salix gooddingii – Goodding's Willow
- Sambucus nigra ssp. canadensis – American Black Elderberry
- Sapindus saponaria – Wingleaf Soapberry
- Schoenocrambe linearifolia – Slimleaf Plainsmustard
- Scrophularia parviflora – Pineland Figwort
- Sedum cockerellii – Cockerell's Stonecrop
- Senecio flaccidus var. monoensis – Smooth Threadleaf Ragwort
- Senecio lemmonii – Lemmon's Ragwort
- Senna covesii – Coves' Cassia
- Senna hirsuta var. glaberrima – Woolly Senna
- Senna wislizeni – Wislizenus' Senna
- Sida abutifolia – Spreading Fanpetals
- Silene scouleri – Simple Campion
- Simmondsia chinensis – Jojoba
- Sisyrinchium demissum – Stiff Blue-eyed Grass
- Solanum americanum – American Black Nightshade
- Solanum elaeagnifolium – Silverleaf Nightshade
- Solanum fendleri – Fendler's Horsenettle
- Sphaeralcea ambigua – Desert Globemallow
- Sphaeralcea angustifolia – Copper Globemallow
- Sphaeralcea emoryi – Emory's Globemallow
- Sphaeralcea fendleri – Fendler's Globemallow
- Sphaeralcea laxa – Caliche Globemallow
- Stachys coccinea – Scarlet Hedgenettle
- Stephanomeria pauciflora – Brownplume Wirelettuce
- Talinum paniculatum – Jewels of Opar
- Tamarix spp. – Tamarisk
- Taraxacum officinale – Common Dandelion
- Tecoma stans – Yellow Trumpetbush
- Tetraclea coulteri – Coulter's Wrinklefruit
- Tetramerium nervosum – Hairy Fournwort
- Thelesperma megapotamicum – Hopi Tea Greenthread
- Thymophylla pentachaeta – Fiveneedle Pricklyleaf
- Tiquilia canescens – Woody Crinklemat
- Tradescantia occidentalis – Prairie Spiderwort
- Tradescantia pinetorum – Pinewoods Spiderwort
- Trianthema portulacastrum – Desert Horsepurslane
- Trichostema arizonicum – Arizona Bluecurls
- Trixis californica – American Threefold
- Vauquelinia californica – Arizona Rosewood
- Verbena gracilis – Fort Huachuca Vervain
- Verbena neomexicana – Hillside Vervain
- Veronica anagallis-aquatica – Water Speedwell
- Vinca major – Bigleaf Periwinkle
- Viola canadensis – Canadian White Violet
- Vitis arizonica – Canyon Grape
- Wislizenia refracta – Spectacle Fruit
- Yucca baccata – Banana Yucca
- Yucca elata – Soaptree Yucca
- Yucca madrensis – Sierra Madre Yucca
- Zinnia acerosa – Desert Zinnia
- Zinnia grandiflora – Rocky Mountain Zinnia
Perennials
Perennials are plants with a three or more year life cycle. Some perennials like Penstemons (Penstemon spp.) are relatively short-lived and only live for a few years, while others like Creosote Bush (Larrea tridentata) are extremely long-lived. One Creosote Bush can live for a hundred years, and the colonial ring of cloned plants surrounding the original plant can continue growing and living for thousands of years.
Listed below are some of the perennial plants found in southeastern Arizona.