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Upland white goldenrod (Solidago ptarmicoides, syn. Oligoneuron album), also called prairie goldenrod and white aster, is a perennial native to Canada, common in dry prairies, sandy ground, and sunny slopes. It is distinguished from other goldenrods by its white flowers resembling those of yarrow. It grows 30 to 90 cm tall and forms dense clumps from a short woody base. Its upright, rigid stems bear narrow, elongated, silvery-green leaves well adapted to dry conditions. From August to September, it produces an abundance of white flowers with yellow centres arranged in flat-topped clusters that are highly attractive to pollinators. Hardy and tolerant, it grows in poor, dry, well-drained soils and withstands heat and exposure to wind.
Furthermore, goldenrods (Solidago spp.) are considered keystone plants for biodiversity, supporting a multitude of pollinators from late summer into fall, and providing essential resources for many species of insects, birds, and small animals well into the season.
Medicinal and culinary uses
The medicinal uses of upland white goldenrod are similar to those of other species in the Solidago genus. The aerial parts have been used in infusions for their diuretic, anti-inflammatory, and antiseptic properties.
Ecological roles
Upland white goldenrod plays an important role in maintaining biodiversity in open and dry habitats. Its nectar-rich flowers attract a great diversity of wild bees, wasps, and butterflies, while its stems and leaves provide shelter for numerous insects. Its prolonged late-summer flowering supports pollinators at a time when few other species are in bloom. It is also used for stabilizing dry slopes and for the ecological restoration of degraded open habitats.
Upland white goldenrod seeds require cold stratification to ensure germination. See the cultivation notes below for more details.
Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.
Sowing and Growing
Technical Details
Seeds per packet:
Family: Asteraceae
Scientific name: Solidago ptarmicoides, syn. Oligoneuron album
Life cycle: Perennial
Hardiness zone: 3
Soil type: Sandy, rocky
Soil moisture level: Dry
Soil - additional attributes: Well-drained
Light: Sun
Blooming: August to September
Spacing: 40 cm
Height: 30 to 90 cm
Deer resistance: High
Stratification: 60 days
Scarification: No
Germination time: 7 to 21 days
Sowing depth: Surface