Bur oak
Quercus macrocarpa Michx.
- light
- Sun–part
- water
- Little
- tall
- 23 m
- wide
- 23 m
Fagaceae
Also called Bur Oak, Mossy cup oak
Formerly Cerris macrocarpa
When it flowers
JFMAMJJASOND
Not known yet in the tropics: too few flowering observations to read a season from.
PetsNC State Extension lists it as toxic to horses (25 Oct 2026)
PeopleNC State Extension lists it as mildly poisonous (fruits, leaves) (25 Oct 2026)
If a child, a pet or anyone may have eaten a plant, contact a doctor or vet straight away, or call the National Poisons Information Centre (AIIMS, New Delhi) on 1800 116 117, free and open 24 hours.
Something wrong with it?About it
- Grows as
- TreeKew's checklist, not yet checked
- Climate
- TemperateKew's checklist, not yet checked
- Wild in
- SC. & SE. Canada to AlabamaKew's checklist, not yet checked
- Light
- Full sun to part shade (3 h or more)Read from NC State Extension, one source
- Height
- 21 m to 24 mRead from NC State Extension, one source
- Spread
- 21 m to 24 mRead from NC State Extension, one source
- Water
- Little: takes droughtRead from NC State Extension, one source
- Flowers
- Yellow, greenRead from NC State Extension, one source
- Coldest it survives
- -40 °C (USDA zone 3a)Read from NC State Extension, one source
Not known yet: heat, hottest it survives.
In other languages (2)
- Finnish
- Takiaistammi
- French
- chêne à gros fruits
Where this comes from
- Wikidata, read 2026-10-25, CC0-1.0
- Kew's checklist, read 2026-10-24, CC-BY-4.0
- NC State Extension, read 2026-10-25, fact, cited
- Wikimedia Commons, read 2026-10-25, Public domain
- 3D model: Quercus macrocarpa (built for Vanagrha) by Vanagrha, own
A fact “checked by a majority of its sources” was settled by a vote of the pages it was read from, not by a person reading it; one marked “one source” rests on that page alone. Anything else not marked checked has not been checked yet. Where nothing is known, the page says so rather than guess.