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Trees of Iowa: An Interactive Key

White Spruce
(Picea glauca)





Not native to Iowa, the white spruce occurs quite widely over the northern portion of the Lake States, northern New England and much of Canada.  It has been planted quite extensively in Iowa for ornamental and windbreak use.  It does best in the eastern part of the state.

Hardiness: zones 2 through 6

Growth Rate:
medium growth

Mature Shape:
columnar, pyramidal shape

Height:
40 - 60 feet

Width:
10 to 20 feet

Site Requirements:
full sun

Flowering Dates: May

Seed Dispersal Dates: September

Seed Bearing Age: 30 years

Seed Bearing Frequency: every 2 to 6 years

Seed Stratification:

The needles are single, four-sided and crowded along the branches. They are 1/2 to 3/4 inches long; sharply pointed; and dark bluish green when mature.

The cone is 1 to 2 inches long, cylindrical, thin and flexible when mature.  The cone scales are rounded and soft at the ends.

The white spruce grows to about 60 feet tall. It is densely foliated and has a straight trunk.  The bark is dark gray or gray-brown in color. Its foliage and twigs are eaten by white-tailed deer.  The tree provides cover for many species of wildlife.

 

Click on a thumbnail image below to view a larger picture.
White Spruce Flower White Spruce  Fruit White Spruce Flower White Spruce Form