Quercus macrocarpaIndiana Native
Bur Oak

Quercus macrocarpa - Overall Tree in Summer

Family:

Fagaceae (Beech Family) 46

Genus:

Quercus (Oak) 33

Plant Type:

Tree 569

Growth Forms:

Upright 574

Hardiness:

USDA Zone 3 233

Deciduous / Evergreen:

Deciduous 839

Flower Notes:

Brown (Not ornamentally important)

Foliage Notes:

Green (Lustrous, dark green foliage in summer); Yellow (Yellow to yellow-brown fall foliage)

Stem Notes:

yellowish brown

Fruit Notes:

Brown (Acorns in fall)

Ultimate Height:

70-80 feet

Ultimate Spread:

70-80 feet

Bloom Times:

April 198

Fruiting Times:

Light Requirements:

Soil Water Requirements:

Dry to medium 50

Soil Notes:

Very tolerant of soils, even dry, alkaline, clay soils

Range:

Eastern United States

Maintenance:

Low 274

Diagnostic Characteristics:

Leaves (4-10" long) are alternate, simple, and oblong-obovate. Leaf shaped like a fiddle, with an expanded lobed blade at the apex, and narrow more-deeply lobed blade at the base. Brownish, ovoid, imbricate buds with a pale pubescence. Acorn (0.75-1.5") has a fringed cap that covers 50% or more of the nut.

Ecological Functions:

Purdue Plant Doctor

Parts and Problems of Oak

Special Characteristics:

Additional Information

More tolerant of city conditions than most oaks. Perhaps too large for a typical residential landscape when mature.

Plant Photo Gallery

Overall Tree in Summer

Leaf

Early Fall Foliage

Late Fall Foliage

Early Fall Habit

Late Fall Habit

Buds

Winter Habit

Bark

Spring Habit

Flowers and Foliage

When Quercus macrocarpa has been observed flowering or fruiting at Purdue University

Flowering

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Week 1 flowering not present	Week 2 flowering not present	Week 3 flowering not present	Week 4 flowering not present	Week 5 flowering not present	Week 6 flowering not present	Week 7 flowering not present	Week 8 flowering not present	Week 9 flowering not present	Week 10 flowering not present	Week 11 flowering not present	Week 12 flowering not present	Week 13 flowering not present	Week 14 flowering not present	Week 15 flowering not present	Week 16 flowering present	Week 17 flowering present	Week 18 flowering present	Week 19 flowering present	Week 20 flowering present	Week 21 flowering not present	Week 22 flowering not present	Week 23 flowering not present	Week 24 flowering not present	Week 25 flowering not present	Week 26 flowering not present	Week 27 flowering not present	Week 28 flowering not present	Week 29 flowering not present	Week 30 flowering not present	Week 31 flowering not present	Week 32 flowering not present	Week 33 flowering not present	Week 34 flowering not present	Week 35 flowering not present	Week 36 flowering not present	Week 37 flowering not present	Week 38 flowering not present	Week 39 flowering not present	Week 40 flowering not present	Week 41 flowering not present	Week 42 flowering not present	Week 43 flowering not present	Week 44 flowering not present	Week 45 flowering not present	Week 46 flowering not present	Week 47 flowering not present	Week 48 flowering not present	Week 49 flowering not present	Week 50 flowering not present	Week 51 flowering not present	Week 52 flowering not present

Fruiting

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Week 1 fruiting not present	Week 2 fruiting not present	Week 3 fruiting not present	Week 4 fruiting not present	Week 5 fruiting not present	Week 6 fruiting not present	Week 7 fruiting not present	Week 8 fruiting not present	Week 9 fruiting not present	Week 10 fruiting not present	Week 11 fruiting not present	Week 12 fruiting not present	Week 13 fruiting not present	Week 14 fruiting not present	Week 15 fruiting not present	Week 16 fruiting not present	Week 17 fruiting not present	Week 18 fruiting not present	Week 19 fruiting not present	Week 20 fruiting not present	Week 21 fruiting not present	Week 22 fruiting not present	Week 23 fruiting not present	Week 24 fruiting not present	Week 25 fruiting not present	Week 26 fruiting not present	Week 27 fruiting not present	Week 28 fruiting not present	Week 29 fruiting present	Week 30 fruiting present	Week 31 fruiting present	Week 32 fruiting present	Week 33 fruiting present	Week 34 fruiting present	Week 35 fruiting present	Week 36 fruiting present	Week 37 fruiting present	Week 38 fruiting present	Week 39 fruiting present	Week 40 fruiting present	Week 41 fruiting present	Week 42 fruiting present	Week 43 fruiting present	Week 44 fruiting present	Week 45 fruiting present	Week 46 fruiting present	Week 47 fruiting not present	Week 48 fruiting not present	Week 49 fruiting not present	Week 50 fruiting not present	Week 51 fruiting not present	Week 52 fruiting not present

70 Quercus macrocarpa found

Building Map...

= Heritage plant = Memorial plant

Number	Accession ID	Location
1	2009_13116*A	HORTPARK	Heritage Plant Dedicated/Memorial Plant
2	2012_01056*B	BCC
3	ORIG_6490*A	SMTH
4	ORIG_3651*A	SHRV	Heritage Plant
5	ORIG_6491*A	SMTH
6	ORIG_1944*A	ARMS
7	2009_13940*A	HORTPARK
8	ORIG_0493*A	WOOD	Heritage Plant
9	ORIG_6488*A	SMTH
10	2017_00093*A	HCR
11	2017_00157*A	HCR
12	ORIG_6487*A	SMTH
13	ORIG_5306*A	PVA	Heritage Plant
14	ORIG_5287*A	PVA	Heritage Plant
15	ORIG_0059*A	MRPK
16	ORIG_0743*A	SHLY	Heritage Plant
17	ORIG_0526*A	WOOD	Heritage Plant
18	ORIG_6494*A	SMTH
19	2017_00155*A	HCR
20	ORIG_6493*A	SMTH
21	ORIG_1888*A	HAMP
22	ORIG_6492*A	SMTH
23	ORIG_3655*A	TREC	Heritage Plant
24	ORIG_1796*A	PUSH
25	2017_00158*A	HCR
26	2017_00156*A	HCR
27	2009_13227*A	HORTPARK
28	ORIG_8189*A	SHLY
29	ORIG_3654*A	TREC	Heritage Plant
30	2017_00154*A	HCR
31	ORIG_0527*A	WOOD	Heritage Plant
32	2009_13113*A	HORTPARK
33	2012_01056*A	BCC
34	2018_01166*A	HORTPARK
35	2022_00503*A	HILL
36	2023_00145*A	HORTPARK
37	2023_00167*A	HORTPARK
38	2023_00167*B	HORTPARK
39	2023_00202*B	HORTPARK
40	2023_00234*A	PICK
41	2023_00234*B	PICK
42	2023_00234*C	PICK
43	2023_00234*D	PICK
44	2023_00234*E	PICK
45	2023_00234*F	PICK
46	2023_00306*A	HORTPARK
47	2023_00686*A	PSF
48	2023_00686*B	PSF
49	2020_01166*A	HORTPARK
50	2020_01166*B	HORTPARK
51	2020_01166*C	HORTPARK
52	2023_00555*A	HORTPARK
53	2020_01166*D	HORTPARK
54	2020_01166*E	HORTPARK
55	2020_01166*F	HORTPARK
56	2015_02467*A	2550
57	2023_00768*A	PSF
58	2023_00768*B	PSF
59	2023_00768*C	PSF
60	2023_00768*D	PSF
61	2023_00768*E	PSF
62	2023_00768*F	PSF
63	2024_00033*A	HORTPARK
64	2024_00033*B	HORTPARK
65	2024_00033*C	HORTPARK
66	2024_00033*D	HORTPARK
67	2024_00064*A	HORTPARK
68	PUI_ORIG_00061*A
69	2025_00015*A	CARY
70	2025_00015*B	CARY