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Native or Introduced to Illinois: native
Natural Habit in Illinois: dry limestone cliffs; upland woodsLeaf: The single leaves are oblong, 3 to 6 inches in length and 1-1/2 to 3 inches wide, coarsely and sharply toothed. They are thick and firm, light yellow-green above to silvery white below.
Flower: The Chinkapin Oak blooms in May and early June with light yellow flowers.
Fruit: The acorn is broadly oval, chestnut brown in color and enclosed for one-half its length in the cup.
Twig: The twigs are greenish tinged with red or purplish red, turning orange-brown or gray-brown.
Bark: The bark is quite thin, breaking into plate-like scales, similar to white oak bark.
Size/Form/Shape: A medium to large-sized tree when growing in favorable locations, the Chinkapin Oak has a straight trunk and a narrow, rounded head.
County Distribution Map for Illinois:
Sources for the Sullivan Middle School Tree Identification Guide were obtained though the use of the following sites:
- Illinois Plant Information Network (ILPIN) @ http://www.fs.fed.us/ne/delaware/ilpin/ilpin.html#Background
- List of Woody Plants Native or Naturalized in Illinois @ http://www.inhs.uiuc.edu/~kenr/woody.html
- Tree Species @ http://ostermiller.org/tree/species.html
- Index to Eastern/Central Trees @ http://www.arborday.org/trees/ECtreelist.html
- ISU Forestry Extension Identification of Common Trees of Iowa @ http://www.extension.iastate.edu/Pages/tree/
- Key to Leaves of Virginia Trees @ http://www.fw.vt.edu/dendro/forsite/key/intro.htm
- List of Native Trees for Use Along Roadsides in Illinois @ http://www.inhs.uiuc.edu/~kenr/treetable.html
- The PLANTS Database @ http://plants.usda.gov/
The information below is from the National Arbor Day Foundation. This information can be viewed in the original (source) form by visiting The National Arbor Day Foundation at http://www.arborday.org.
Sun Exposure: This oak does well in Full sun.
Soil Type: The Chinkapin Oak grows in acidic, alkaline, loamy, moist, clay, sandy, wet, well-drained, wide range of soils and is drought tolerant.
Moisture: The Chinkapin Oak tolerates wet sites, but does best in well-drained areas that do not experience severe drought.
Growth Rate: This tree grows at a fast growth rate.
Hardiness Zones: 4 - 7
This oak can be expected to grow in the zones shown in color in the arborday.org zone map.