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Trees of Iowa: An Interactive Key

Common Juniper
(Juniperus communis)




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Iowa County Poweshiek County Jasper County Polk County Dallas County Guthrie County Audubon County Marshall County Story County Boone County Greene County Carroll County Washington County Keokuk County Mahaska County Marion County Warren County Madison County Louisa County Muscatine County Adair County Shelby County Crawford County Tama County Benton County Linn County Des Moines County Henry County Jefferson County Wapello County Monroe County Lucas County Clarke County Union County Cass County Adams County Montgomery County Mills County East Pottawattamie County West Pottawattamie County Harrison County Monona County Cedar County Jones County Lee County Van Buren County Davis County Appanoose County Wayne County Decatur County Ringgold County Taylor County Page County Fremont County Scott County Clinton County Jackson County Dubuque County Delaware County Buchanan County Black Hawk County Grundy County Hardin County Hamilton County Webster County Calhoun County Sac County Ida County Woodbury County Clayton County Bremer County Fayette County Chickasaw County Butler County Franklin County Wright County Humboldt County Pocahontas County Buena Vista County Cherokee County Plymouth County Floyd County Cerro Gordo County Hancock County Palo Alto County Clay County O'Brien County Sioux County Allamakee County Winneshiek County Howard County Mitchell County Worth County Winnebago County Kossuth County Emmet County Dickinson County Osceola County Lyon County

In Iowa this is often only a large, bushy shrub, seldom reaching tree size.  It has a short, irregular trunk.

Hardness: zones 2 through 9

Growth Rate:
moderate to fast

Mature Shape:
upright, densely pyramidal becoming irregular and pendulous with age

Height:
30 to 40 feet

Width:
10 to 20 feet

Site Requirements:
Prefers full sun and well drained soils. Is tolerant of a variety of conditions including poor soils, heat and drought.

Flowering Dates: April - May

Seed Dispersal Dates: Seeds persist for 2 years

Seed Bearing Age:

Seed Bearing Frequency: Irregular

Seed Stratification: Prechill for 3 months at 34F to 40F

The awl-shaped, leaves are spreading, spiny and scalelike and 1/3 to 1/2 inch long.   They are more flattened and white on the upper surface than the red cedar and turn a rich bronze color during the winter.

Common Juniper FormCommon Juniper Fruit

The bluish or purple fruit is an irregular, ball-shaped berry, with one to three small hard seeds.

The bark is reddish brown and becomes papery scaled.

 

Click on a thumbnail image below to view a larger picture.
Common Juniper Form Common Juniper Form Common Juniper Fruit Common Juniper Twigs & Leaves