Rāzna National Park, Jaundome manor
Canadian goldenrod (Solidago canadensis) is a species native to North America which was brought into Europe as a decorative garden plant. It threatens Latvia’s nature by overwhelming native plants and suppressing their growth.
Perennial, 70-210 cm high, herbaceous plant. The stems grow straight, almost bare at the lowest part or covered in sparse bristles and hairs.
Leaves of the stem are with three prominent veins, narrowly lanceolate or ovoid lanceolate, 5–19 cm long and 0,5–3,0 cm wide. The top of the leaf is covered with sparse hairs or almost bare, the underside is covered with sparse hairs and bristles.
The compound inflorescence is pyramidical in shape with long and curved lower branches. The inflorescence consists of 150-1300 or more small heads of flowers. Blooms from August to October.
Giant goldenrod. Both species are invasive in Latvia.
In order to distinguish species of goldenrod, one needs specific knowledge. In addition, these species have crossed in some places so it is not important to determine which exact species of the plant you have found – this you can leave to the experts!
Manner of introduction
Both species have been brought in as decorative garden plants.
Characteristics of growing conditions
Grows in meadows, at roadsides, in fallows, along train tracks, in dumping sites, along the shores of rivers and other water bodies.
Familiarize yourself with invasive species and submit your observataions to: “Invazīvo sugu pārvaldnieks”!
Source: “Invazīvo sugu pārvaldnieks”, Nature Conservation Agency