Canada Goldenrod (Solidago altissima)

Canada Goldenrod (Solidago canadensis) 

Canada Goldenrod (Solidago altissima) is an herb of the Aster Family (Asteraceae) and order Asterales. This plant is also known as the Tall Goldenrod because it can grow as high as seven feet (2.1 meters). The tiny, ⅛ inch (3 millimeter) yellow flowers are on the upper side of arching branches. These branches are grouped together to form a pyramid-shape cluster. The clusters are at the top of a downy stem that is grayish-green to yellowish-green in color. This plant flowers from August to November. The photographs on this page were taken in late August 2010 on the east side of French Hill Pond, These plants were over four feet (1.2 meters) tall.

Canada Goldenrod (Solidago canadensis) Top

The leaves are lance-shaped, dark green and rough on top with three veins. The undersides of the leaves are lighter green and somewhat hairy. The leaves are sometimes toothed. The lower leaves can be as much as six inches (15 centimeters) long but the leaves become shorter the higher they are on the plant.

The fruit is a brown seed.

The root system is a rhizome.

This plant is very common in Maine. It helps filter water and stabilize the soil. During the height of flowering, this plant is very popular with nectar-hunting insects.

Another common species, Solidago canadensis,  with the same common name, Canada Goldenrod,  is very similar but has distinctly toothed leaves and does not grow as tall.

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