Serving All of Arizona
Arizona Allergen Directory
Browse every pollen allergen we track across Arizona — 55 trees, 23 weeds, and 5 grasses. Filter by plant type and allergy severity, or search by common or scientific name.
83 plants
Trees (55)
Tree
Acacia
Vachellia farnesiana
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Tree
Acacia
Vachellia farnesiana (formerly Acacia farnesiana)
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Tree
African Sumac
Rhus lancea (syn. Searsia lancea)
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Tree
Arizona Cypress
Hesperocyparis arizonica
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Tree
Ash
Fraxinus
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Tree
Bottle Tree
Brachychiton populneus
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Tree
California Fan Palm
Washingtonia filifera
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Tree
Catclaw Acacia
Senegalia greggii (formerly Acacia greggii)
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Tree
Cedar
Cedrus deodara
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Tree
Chinese Pistache
Pistacia chinensis
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Tree
Chitalpa
Chitalpa tashkentensis
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Tree
Citrus
Citrus spp. (C. sinensis – orange; C. paradisi – grapefruit; C. limon – lemon)
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Tree
Cottonwood
Populus
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Tree
Crape Myrtle
Lagerstroemia indica
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Tree
Date Palm
Phoenix dactylifera
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Tree
Desert Hackberry
Celtis pallida
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Tree
Desert Willow
Chilopsis linearis
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Tree
Elm
Ulmus
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Tree
Eucalyptus
Eucalyptus
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Tree
Ironwood
Olneya tesota
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Tree
Juniper
Juniperus
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Tree
Mesquite
Prosopis
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Tree
Mexican Fan Palm
Washingtonia robusta
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Tree
Mulberry
Morus
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Tree
Oak
Quercus
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Tree
Olive
Olea europaea
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Tree
Palo Verde
Parkinsonia
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Tree
Pecan
Carya illinoinensis
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Tree
Pine
Pinus Ponderosa
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Tree
Pygmy Date Palm
Phoenix roebelenii
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Tree
Sycamore
Platanus
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Tree
Tamarisk
Tamarix
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Tree
Texas Ebony
Ebenopsis ebano (formerly Pithecellobium flexicaule)
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Tree
Velvet Mesquite
Prosopis velutina
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Tree
Vitex
Vitex agnus-castus
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Tree
Willow
Salix
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Tree
Agave
Agave americana (Century Plant); Agave parryi (Parry’s Agave)
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Tree
Barrel Cactus
Ferocactus wislizeni (Fishhook Barrel); Ferocactus cylindraceus (Compass Barrel); Echinocactus grusonii (Golden Barrel)
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Tree
Bougainvillea
Bougainvillea spp.
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Tree
Cholla
Cylindropuntia spp.
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Tree
Euphorbia
Euphorbia spp.
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Tree
Golden Barrel Cactus
Echinocactus grusonii (syn. Kroenleinia grusonii)
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Tree
Hibiscus
Hibiscus rosa-sinensis
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Tree
Lady Banks Rose
Rosa banksiae
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Tree
Ocotillo
Fouquieria splendens
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Tree
Oleander
Nerium oleander
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Tree
Prickly Pear
Opuntia spp.
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Tree
Queen’s Wreath
Antigonon leptopus
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Tree
Saguaro
Carnegiea gigantea
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Tree
Trumpet Vine
Campsis radicans
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Tree
Bougainvillea (Vining)
Bougainvillea spectabilis; Bougainvillea × buttiana
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Tree
Yucca
Yucca elata (Soaptree Yucca); Yucca baccata (Banana Yucca)
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Tree
Brittlebush
Encelia farinosa
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Tree
Dwarf Myrtle
Myrtus communis ‘Compacta’
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Tree
Pittosporum
Pittosporum tobira
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Weeds (23)
Weed
Privet
Ligustrum
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Weed
Aloe Vera
Aloe vera (syn. Aloe barbadensis)
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Weed
Careless Weed
Amaranthus palmeri
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Weed
Cocklebur
Xanthium strumarium
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Weed
Creosote
Larrea tridentata
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Weed
Desert Marigold
Baileya multiradiata
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Weed
Desert Ruellia
Ruellia peninsularis
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Weed
Desert Zinnia
Zinnia acerosa
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Weed
English Plantain
Plantago lanceolata
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Weed
Fairy Duster
Calliandra eriophylla
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Weed
Ice Plant
Delosperma cooperi
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Weed
Jojoba
Simmondsia chinensis
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Weed
Lamb’s Quarters
Chenopodium album
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Weed
Lantana
Lantana camara
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Weed
Pigweed
Amaranthus
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Weed
Ragweed
Ambrosia
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Weed
Russian Thistle
Salsola kali
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Weed
Sagebrush
Artemisia
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Weed
Texas Sage
Leucophyllum frutescens
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Weed
Trailing Indigo Bush
Dalea greggii
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Weed
Trailing Lantana
Lantana montevidensis
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Weed
Trailing Rosemary
Salvia rosmarinus ‘Prostratus’ (formerly Rosmarinus officinalis ‘Prostratus’)
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Weed
Verbena
Glandularia gooddingii
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