What's In Bloom?
DRY SUMMER
May - June
Trees that bloom in the intense heat of May and June are responding to the increased soil temperatures. Many
of them have tropical origins. Some are native to other places where this season is especially dry. Pollinators include bees, hummingbirds, bats, and butterflies and other insects. Seeds will develop so that they can be dispersed prior to summer rains. |
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Cactus species -
Krutch Garden or around
Old Main |
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Saguaro - Carnegiea gigantea
Thick waxy white flowers
Native to Sonoran Desert key species; State flower
Krutch Garden;
North of Old Main; East of
Math
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Pink bottle tree - Brachychiton x excellens
Pink 3" velvety flowers.
Native to Australia.
South of Bio Science West
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Golden chain tree - Cassia fistula
Long chains of bright yellow flowers
Native to Indian subcontinent
West of Nugent
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Jacaranda - Jacaranda mimosifolia
Lush Indigo flowers
Native to South America; these particular ones from high elevation
South of
Main Library
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Senna spectabilis
Neon “knock your eyes out” yellow flowers
Native to Tropical America
East of Main Library
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Kalahari Christmas tree; Marabou thorn - Dichrostachys cinerea
Ornate pink/white “earring” flowers
Native to African dry lands
South of
Graham/Greenlee Hall
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Calabash tree - Crescentia alata
Brown (bat pollinated) flowers emerging from trunk
Native to Mexican tropics
Magic Alley south of
Old Chemistry; south of
Main Library
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Sonoran cordia - Cordia sonorae
White flowers that change to warm brown
Native to Mexican tropical deciduous forest
Magic Alley, south of Old Chemistry
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Bottle brush tree - Callistemon citrinus; Callistemon ustralis; Callistemon viminalis
Red pendulous flowers that resemble bottle brushes.
Native to Australia.
Education courtyard; NE of
Physical/Atmospheric Sciences; south of
Manzanita-Mojave; south of
Engineering
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Kapok tree; Floss silk tree - Ceiba acuminata
Pale pink 5" flowers, open at night
Native to Mexican tropical deciduous forest
SW of Math
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Siris tree - Albizia lebbeck
Pale green 2" puffballs, resembling shaving brushes
Native to Southeast Asia & Australia
South of Cochise
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Monk’s pepper tree - Vitex agnus castis
Spikes of blue flowers
Native to Mediterranean
West of
Old Chemistry; south of
Maricopa; NW of
Speech Pathology
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Desert willow - Chilopsis linearis
Fluffy pink/violet flowers
Native to Sonoran Desert, especially in stream banks
SW Yavapai;
east Harvill;
SW Old Main
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African baobab - Adansonia za
Chalice shaped gold flowers
Native to Madagascar; largest one in US; UA Heritage Tree
SW of Administration
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Horseradish tree - Moringa oleifera
Chains of pale yellow flowers
Native to India & Africa; widely seen in tropics
North of
Herring; south
Vet Sci/Micro; south of
Gila
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Giant milk weed - Calotropis procera
Clusters of velvety purple flowers
Native to India, Middle East, Africa
West of
Science Library
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Alamos pea tree - Brogniartia alamosana
Deep wine pea flowers
Native to Mexican tropics
West
Science Library; east of
Math
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Crape myrtle - Lagerstroemia indica
Profuse red, white flowers
Native to China & Japan
‘Green belt’ along
Park Ave; east of
Nugent; north of
Anthropology along entrance drive
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Red Mexican Bird of Paradise - Caesalpinia pulcherrima
Profuse red/orange tropical blooms
Native to tropics
South of
Nugent; along
Campbell Avenue; along
Cherry Avenue
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To see a full campus map with all trees identified, please click on “Maps and Walks”. You can search for tree species, identify any one tree, find all species from Mexico, learn what plants grow around a favorite building, or just remember what a beautiful campus we have.
