- Acer grandidentatum – Bigtooth Maple
- Amaranthus palmeri – Carelessweed
- Ambrosia ambrosioides – Ambrosia Leaf Bur Ragweed
- Ambrosia confertiflora – Weakleaf Bur Ragweed
- Ambrosia cordifolia – Tucson Bur Ragweed
- Ambrosia deltoidea – Triangle Bur Ragweed
- Arundo donax – Giant Reed
- Atriplex canescens – Fourwing Saltbush
- Baccharis salicifolia – Mule-fat
- Baccharis sarothroides – Desertbroom
- Celtis ehrenbergiana – Spiny Hackberry
- Celtis laevigata var. reticulata – Netleaf Hackberry
- Conyza canadensis – Canadian Horseweed
- Datura discolor – Desert Thorn-apple
- Datura wrightii – Sacred Thorn-apple
- Fraxinus velutina – Velvet Ash
- Helianthus annuus – Common Sunflower
- Hymenoclea salsola – Burrobrush
- Juglans major – Arizona Walnut
- Juniperus deppeana – Alligator Juniper
- Juniperus monosperma – Oneseed Juniper
- Larrea tridentata – Creosote Bush
- Medicago lupulina – Black Medick
- Medicago sativa – Alfalfa
- Melilotus officinalis – Yellow Sweetclover
- Melinis repens – Rose Natal Grass
- Mimosa aculeaticarpa var. biuncifera – Catclaw Mimosa
- Mimosa dysocarpa – Velvetpod Mimosa
- Parkinsonia florida – Blue Paloverde
- Parkinsonia microphylla – Yellow Paloverde
- Parthenice mollis – Annual Monsterwort
- Phacelia campanularia – Desertbells
- Phacelia crenulata – Cleftleaf Wildheliotrope
- Platanus wrightii – Arizona Sycamore
- Populus fremontii – Fremont Cottonwood
- Populus tremuloides – Quaking Aspen
- Prosopis velutina – Velvet Mesquite
- Quercus gambelii – Gambel Oak
- Rhus lancea – African Sumac
- Rumex hymenosepalus – Canaigre Dock
- Salix gooddingii – Goodding's Willow
- Salsola tragus – Prickly Russian Thistle
- Simmondsia chinensis – Jojoba
- Tamarix spp. – Tamarisk
- Tidestromia lanuginosa – Woolly Tidestromia
- Xanthium strumarium – Rough Cocklebur
Allergenic Plants

Allergenic plants are those with pollen that may trigger allergies in susceptible persons or cause allergenic contact dermatitis. Pollen-producing plants are those in the Superdivision Spermatophyta (Seed Plants), which includes both flowering plants and non-flowering, cone-bearing plants.
Note: Although all of these plants can potentially cause allergies in some individuals, not everyone is affected by them, which is a very good thing given how common and widespread some of these plants are here in southeastern Arizona.
Listed below are some of the allergenic plants found in southeastern Arizona.