Arizona's National Champion Trees
Native and Naturalized Species

As of June 2004

Ken Morrow

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
NOMINATOR
CIRCUM.
HEIGHT
CROWN
POINTS
Acacia rigidula
Blackbrush Acacia
(1998 / 1998 co-champ)
Casa Grande, Central Arizonas College
Bill Kinnison
16 in.
26 ft
29 ft.
49
Acacia rigidula
Blackbrush Acacia
(1999 / 1999 co-champ)
Glendale, Mountain States Nursery
14 in.
27 ft.
31 ft.
49
Acacia tortuosa
Huisachillo, Twisted Acacia
(2003 / 2003)
Phoenix, Baker Nursery
Ken Morrow
and Kathy Stiles
49 in.
31 ft.
30 ft.
88
Acer grandidentatum
Canyon maple
(1998 / 1998)
Pinal Mts., Tonto Nat. Forest
Rick Heffernon
139 in.
75 ft.
50 ft.
227
Arbutus arizonica
Arizona Madrone
(1997 / 1997)
Sta. Rita Mts., Coronado Nat. Forest
Tom Harlan
176 in.
42 ft.
46 ft.
230
Arctostaphylos pringlei
Pringle Manzanita
(1999 / 1999)
Yavapai Co., Coconino Nat. Forest
C. Mills & others
37 in.
18 ft.
14 ft.
59
Arctostaphylos pringlei
Pringle Manzanita
(2003 / 2003 co-champ)
Sterling Canyon, Coconino Nat. Forest
David and Judy Thornberg
36 in.
17 ft.
23 ft.
59
Bursera microphylla
Elephant Tree
(1997 / 1997)
Tinajas Atlas Mts., Goldwater Air Force Range
 
Ken Morrow
17 in.
13 ft.
16 ft.
34

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 		NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Canotia holocantha
Crucifixion Thorn
(2001 / 2001 co-champ)
Yavapai Co.
Mike Hallen
46 in.
27 ft.
21 ft
78
Canotia holocantha
Crucifixion Thorn
(2003 / 2003 co-champ)
Prescott Nat. Forest
David Thornberg and Harry Untiedt
49 in.
26 ft.
20 ft.
80
Celtis pallida
Spiny Hackberry
(2000 / 2000 co-champ)
Pima Co.
Bob & Rita Cote
25 in.
31 ft.
23 ft.
62
Celtis pallida
Spiny Hackberry
(1996 / 1996)
Rincon Valley, Pima Co.
Matt Johnson
31 in.
22 ft.
24 ft.
59
Cercidium floridum
Blue Paloverde
(2003 / 2003)
Hyder, Maricopa BLM
Mike Hallen and
Chuck Hockaday
87 in.
42 ft.
62 ft.
145
Cercidium microphyllum
Foothill Palo Verde
(2003 / 2003)
Mobile, Maricopa County
Mike Hallen
43 in.
29 ft.
43 ft.
83
Cereus giganteus
Saguaro
(2002 / 2002)
Horseshoe Lake, Tonto NF
Joe Pleggenkuhle, Chris Seymore, and Chuck Hockaday
94 in
46 ft.
10 ft.
143
Cereus giganteus
Saguaro
(2003 / 2003)
Mammoth
Charlie Blank
108 in.
32 ft.
16 ft.
144


SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Cercocarpus breviflorus
Hairy Mountain-Mahogany
(1996 / 1996)
Sta. Rita Mts, Coronado NF
Robert Zahner
32 in
20 ft
17 ft
 56
Chilopsis linearis
Desert-Willow
(1976 / 1995)
Globe, Gila Co.
Mitchell Holder
160 in
68 ft
48 ft
 240
Citrus aurantifolia
Lime
(2003/2003)
Phoenix
L.B. Wright and R.T. Gates
14 in.
21 ft.
15 ft
39

Citris aurantium
Sour Orange
(2003/2003)
Tucson
Judy Nantell & Chris Maloney
44 in.
28 ft.
24 ft.
78
Condalia globosa
Bitter Condalia
(2000 / 2000)
Eagletail Mts. Wilderness
Glenda Zahner
42 in
17 ft
25 ft
 65
Condalia globosa
Bitter Condalia
(2003 / 2003)
Little Ajo Mountains
Jim Malusa
44 in.
18 ft.
16 ft.
 66
Conwania mexicana
Cliffrose
(2003 / 2003 co-champ)
Grand Canyon NP, US Park Service
Mike Hallen
28 in.
19 ft.
17 ft.
 51
Conwania mexicana
Cliffrose
(2003 / 2003 co-champ)
Grand Canyon NP, US Park Service		 Judy Thornberg
33 in.
17 ft.
15 ft
54
Cupressus arizonica var. arizonica
Arizona Cypress
(1955 / 1993)
Sta. Catalina Mts.
James Mielke
240 in
93 ft
48 ft
 345
Cupressus arizonica v. glabra
Arizona Smooth Cypress
(1998 / 1998)
Gila Co. Tonto NF
Rick Heffernon
196 in
70 ft
44 ft
 277
Erythrina flabelliformis
Southwest Coral Bean
(1999 / 1999)
AZ-Sonoran Desert Museum, Tucson
 
George Montgomery
11 in
15 ft
12 ft
 29

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Eucalyptus camaldulensis
Longbeak Eucalyptus
(1993 / 2002)
Boyce Thompson Arboretum
Robert and
Glenda Zahner
241 in
140 ft
93 ft
 404
Eucalyptus camaldulensis
Longbeak Eucalyptus
(2002 / 2002)
Chandler, JC Bogle
Mike Hallen and
Sylvia Escudero
276 in.
112 ft.
84 ft.
 409
Eysenhardtia polystachya
Kidneywood
(1993 / 1993)
Coyote Mts. Wilderness
Peter Gierlach
49 in
21 ft
25 ft
 76
Eysenhardtia texana
Texas Kidneywood
(2003 / 2003)
B. Thompson Arboretum
K. Morrow, K. Stiles,
and M. H allen
18 in.
29 ft
14 ft
 51
Forestiera phillyreoides
Desert Olive
(1997 / 1997)
Buenos Aires NWR
Roseann Hanson
10 in
17 ft
17 ft
 31
Fraxinus anomala var. lowellii/
Lowell Ash
(2003/ 2003)
Prescott NF
H. Untiedt and
D. Thornburg
58 in.
33 ft.
21 ft
 96
Fraxinus cuspidata
Fragrant Ash
(2003/ 2003)
Hulalapai Mtn. Park, Mohave County
M. Hallen and
B. Kinnison
33 in.
26 ft.
26 ft.
 65
Fraxinus gooddingii
Goodding Ash
(1995 / 1995)
Tumacacori Mts., Coronado NF
Josh Tewksbury
25 in
30 ft
22 ft
 61
Fraxinus greggii
Gregg Ash
(2002 / 2002)
University of Arizona
Libby Davison
17 in.
26 ft
27 ft
 50
Fraxinus papillosa
Chihuahua Ash
(2003/ 2003)
Santa Rita Mtns., Coronado NF
David and Paul
Thornburg
33 in.
49 ft.
17 ft.
 86
Fraxinus velutina
Velvet Ash
(2001 / 2001)
Fossil Springs Wilderness
Jerry Nash and,
Mike Hallen
189 in
90 ft
85 ft
 300
Garrya wrightii
Wright Silktassel
(1997 / 1997)
Buenos Aires NWF
Robert Zahner
28 in
22 ft
22 ft
 56

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Holacantha emoryi
Crucifixion Thorn
(2000 / 2000)
Cuerda de Lena, Organ Pipe Cactus Nat. Mon.
Jim Malusa
38 in
25 ft
23 ft
69
Juglans major
Arizona Walnut
(1999 / 1999)
Aravaipa Canyon Wilderness
K. Morrow,
M. Hallen
215 in
73 ft
88 ft
310
Juniperus deppeana
Alligator Juniper
(2003 / 2003)
Prescott NF
David Thornberg
305 in.
65 ft.
54 ft.
384
Juniperus deppeana
Alligator Juniper
(1995 / 1995)
Granite Mtn., Prescott NF
William Litzinger
328 in
46 ft
49 ft
386
Juniperus deppeana
Alligator Juniper
(1998 / 1998)
Granite Mtn., Prescott NF
Richard and Mickey Contreras
308 in.
57 ft.
76 ft.
384
Juniperus erythrocarpa
Redberry Juniper
(2001/2001)
Organ Pipe National Monument
John Stiles
119 in.
28 ft.
33 ft.
155
Koeberlinia spinosa
Allthorn
(1993 / 2002)
Boyce Thompson SW Arboretum
Kim Stone
27 in
21 ft
19 ft
53
Ligustrum japonicum
Japanese privet
(2003/2003)
Jerome, Yavapai Co.
David Thornberg
25 in.
28 ft.
28 ft.
60
Lysiloma microphyiia
Littleleaf Lysiloma
(1998 / 1998)
Coolidge, Central Arizona College
Bill Kinnison
54 in.
33 ft.
39 ft.
97
Maytenus phyllanthoides
Florida Mayten
(2002/ 2002)
B. Thompson Arboretum
K. Morrow, K. Stiles
and M. Hallen
22 in.
19 ft.
26 ft.
48
Nerium oleander
Oleander
(2003/2003 co-champ)
Sun City
Larry Wright and Russell Gates
52 in.
26 ft.
28 ft.
85
Nerium oleander
Oleander
(2003/2003 co-champ)
Sun City
Larry Wright and Russell Gates
55 in.
28 ft.
25 ft.
89


SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Nicotiana glauca
Tree Tobacco
(1999/2001)
Tucson		 J and J Richman
14 in.
20 ft.
14 ft
38
Nolina bigelovii
Bigelow Nolina
(1997 / 1997)
Cabeza Prieta NWR
Tom and Anita Harlan
125 in
13 ft
8 ft
140
Olneya tesota
Desert Ironwood
(1995 / 1995)
Goldwater Air Force Range
Ken and James Morrow
170 in
45 ft
43 ft
226
Opuntia ficus-indica
Indian Fig
(1999 / 1999)
Tucson, Tucson Medical Center
Kenneth Porter
36 in
14 ft
16 ft
54
Opuntia fulgida
Jumping Cholla
(2000 / 2001)
Pinal County
Mike Hallen
32 in
21 ft
15 ft
57
Parkinsonia aculeata
Mexican Palo Verde
(2001 / 2001)
Maricopa County
Mike Hallen and
Florence Roller
78 in
37 ft
54 ft
129

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Pinus discolor
Border Pinyon
(1999 / 1999)
Sta. Catalina Mts., Coronado NF
R & G Zahner and
K. Porter
64 in
32 ft
37 ft
105
Pinus englemanni
Apache Pine
(1998 / 1998)
Sta. Rita Mts.,Coronado NF
R & G Zahner
127 in.
108 ft.
44 ft.
246
Pinus englemanni
Apache pine
(1998 / 1998)
Sta. Rita Mts., Coronado NF
K. Morrow,
M. Hallen
121 in
112 ft
38 ft
243
Pinus leiophylla
Chihuahua Pine
(1997 / 1997)
White Mtn., Apache Indian Reservation
Dave Borland and
Lucky Holden
121 in.
87 ft.
17 ft.
212
Pinus ponderosa var. arizonica
Arizona Pine
(1998 / 1998)
Cabeza Prieta NWR
R & G Zahner and
K Porter
153 in.
127 ft.
57 ft.
294
Pithecelobium pallens
Huajillo
(2000 / 2000)
Tucson, University of Arizona
Kathryn Styles
18 in.
41 ft.
27 ft.
66
Platanus wrightii
Arizona Sycamore
(1999 / 1999)
Aravaipa Canyon Wilderness, BLM
Ken Morrow
335 in
69 ft
88 ft
426
Populus fremontii
Fremont Cottonwood
(1970 / 1996)
Patagonia, San Jose de Sonoita
Don Richard and
Mark Rouw
504 in
92 ft
108 ft
623

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Prosopis velutina
Velvet Mesquite
(1949 / 1993)
Sta. Cruz River, Hathaway Ranch
Gilbert Sykes
196 in
46 ft
60 ft
257
Quercus arizonica
Arizona White Oak
(1998 / 1998)
Pinal Mts., Rec. Area, Tonto NF
Mike Hallen
133 in
56 ft
47 ft
201
Quercus dunnii
Dunn Oak
(1995 / 1995)
Joshua Forest Parkway, BLM
Lora Morrow
83 in
37 ft
36 ft
129
Quercus gambelii
Gambel Oak
(2003/2003)
Coconino National Forest
S. Peppenbert, H. Untiedt, D. Thornberg
83 in.
37 ft.
36 ft.
129
Quercus hypoleucoides
Silverleaf Oak
(2001 / 2001)
Sta. Rita Mts., Coronado NF
Mike Hallen and
Ken Porter
158 in
85 ft
52 ft
256
Quercus pungens
Sandpaper Oak
(2002 / 2002)
Portal, Corondao NF
Robert Zahner
13 in.
18 ft
29 ft
38
Quercus rugosa
Netleaf Oak
(1998 / 1998)
Sta. Catalina Mts., Coronado NF
R. Zahner and
J. Smith
88 in
47 ft
36 ft
144
Quercus toumeyi
Toumey Oak
(1994/ 1994)
Atascosa Mtns., Coronado NF
Robert Zahner
68 in
27 ft
33 ft
103

SPECIES /COMMON NAME
Year Nominated/Year Last Measured
 NOMINATOR CIRCUM. HEIGHT CROWN POINTS
Quercus turbinella v. ajoensis
Ajo Oak
(1993/ 1998)
Ajo Mts., Organ Pipe National Monument
Robert and
Glenda Zahner
82 in
35 ft
40 ft
127

Rhamnus californica
California buckthorn
(2003/2003 co-champ)
Organ Pipe Cactus Nat. Mon.

R and G Zahner, K Morrow
82 in.
35 ft.
40 ft.
127
Rhus choriophylla
Mearn's Sumac
(1995/ 1995)
Tumacacori Mts., Coronado NF
Robert Zahner
24 in
20 ft
19 ft
49
Rhus ovata
Sugar sumac
(1995/ 1995)
Superstition Mts., Tonto NF
Ken Morrow
65 in
32 ft
33 ft
105
Robinia neomexicana
New Mexico Locust
(1997/ 1997)
Pinal Mts. Rec. Area, Tonto NF
Mike Hallen and
George Kieren
90 in
71 ft
28 ft
168

Robinia neomexicana
New Mexico locust
(2003/2003 co-champ)
Coconino County, near Pine,
Coconino NF
Judy Thornberg
79 in.
79 ft.
33 ft.
166
Salix taxifolia
Yewleaf Willow
(1996/ 1996)
Lochiel, San Rafael de la Zanja Ranch
Robert Zahner
71 in
33 ft
31 ft
102
Sapium biloculare
Jumping Bean
(2001/ 2001)
Cabeza Prieta Nat. Wildlife Refuge
Jim Malusa
9 in
13 ft
18 ft
27
Tacoma stans /
Yellow Elder
(2002/ 2002 )
Canyon Lake, Tonto NF
Ken Morrow
20 in.
23 ft.
19 ft.
48
Vauquelinia californica
Arizona Rosewood
(1994/ 1994)
Tubac
Robert Zahner
78 in
47 ft
40 ft
135
Ziziphus obtusifolia /
Greythorn
(1998/ 1998)
Bringham Cienega, The Nature Conservancy
Tom Butler
14 in.
26 ft
20 ft
45
 

 Notes and Additions:

Arizona has over 120 species of native trees, plus a dozen or more naturalized species. Of these, in the 2004-2005 National Register of Big Trees, Arizona has national champion trees of 76 species, and counting as co-champions, Arizona has 84 individual champion trees.

For further information contact The Arizona Register of Big Trees through ARBT coordinators:

Robert Zahner, Coordinator, ARBT,
1901 S. Tilting T Pl.,
Tucson, AZ 85713,

and

Ken Morrow
Co-coordinator, ARBT,
1503 E. Todd Dr.
Tempe, AZ 85283


To email Ken Morrow: kmorrow@arizonensis.org

Updated December 16, 2004