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Native Trees of Prince Edward IslandRed spruce (Picea rubens)
Description:
A very tall, straight conifer once much more common than it is today. It grows up to 70 ft. (22 m) in height and 2 ft. (60 cm) in diameter. Red spruce can hybridize with black spruce, so it is best to collect from areas with only large red spruce. As a generalization, white spruce is found in old fields, treelines and along the shore, with branches straight out from the trunk. Black spruce is found in wetter areas and the branches droop. Red spruce grows in rich mixed wood stands and is not nearly as bell-shaped as black spruce. Twigs of red spruce are reddish and hairy and the new growth flushes much later in the spring than its other two relatives.
Red Spruce (Picea rubens).
Growing Conditions:
Red spruce grows best in mixed wood stands, often along the sides of streams in deep, rich soil. It is found growing with hemlock, white pine, sugar maple and yellow birch in the climax of the Acadian forest. Light shading when the tree is young keeps it growing tall and straight and prevents the soil from drying out.
Closeup of Red Spruce needles.
Propagation:
Given the height of most of the red spruce we collect seed from, wait until the red squirrels have knocked down a bunch of cones. This means that you may have to visit the site every few days during October, but it is a lovely excuse to get out into the woods. Each cone will contain many seeds, although some may not be viable. Place the cones in a paper bag or cardboard box with some ventilation, and keep in a warm place. As the cones dry out and open, the seeds will drop out. These can be fall planted or stored in a dry place until spring. Plant seeds every inch (2.5 cm), in rows 4 in. (10 cm) apart, at a depth of 1/4 in. (6 mm). Mulch the area over the winter removing most of this in the spring. Beds should have some shade and not be allowed to dry out.
Wildlife Uses:
All spruce are extremely valuable for wildlife, whether as a food source, nesting site or protection. Red spruce seeds are the preferred food of white-winged crossbills, red-winged crossbills and pine siskins, although many other species of bird and mammal also rely on them. Especially in hardwood stands which lack conifers, red spruce plays an important role in providing cover and protection for both predators and prey.
Pine Siskens. Photo Beth Hoar.
Areas of Usage:
Red spruce is very valuable for lumber production and for log home building. It should be a component of many forest plantings, especially after a hardwood thinning where conifers may be lacking. Red spruce does not do well under white spruce, since an attack of spruce budworm will devastate the seedlings, but if the opening is large enough they can be successful. They also make poor growth under deep shade so make sure there are partial openings in the canopy.
For more pictures and descriptions of this species, check out the Atlantic Forestry Centre, the CFS N.B. Tree Page, and the Iowa State University Dendrology page and the Dendrology at Virginia Tech Page and the Virtual Foliage Homepage. For a review of the ecology of this species, refer to the Silvics of North America.
In 1806, John Stewart wrote an excellent description of Forest Trees and Other Vegetable Productions on PEI at that time.
Read more here.
We offer a number of workshops and guided tours at the Macphail Woods and it is an excellent opportunity to learn more about the native trees of Prince Edward Island. Check out the Events Calendar for more information. Web development and maintenance by Chris Martin.
