Canada Goldenrod
Solidago canadensis
Also called: Common Goldenrod
Canada Goldenrod. Solidago canadensis, the Canada goldenrod, is a rhizomatous herbaceous perennial native across most of North America. Plumes of tiny golden-yellow flowers crown 3–5 foot stems from late summer into fall, providing one of the most important late-season nectar and pollen sources for native bees, migrating monarchs, and beneficial wasps. Frequently and wrongly blamed for hay fever, which is actually caused by wind-pollinated ragweed blooming at the same time.
Growing & care
- Sun: full sun for densest bloom; tolerates light shade.
- Water: average to dry. Drought-tolerant once established.
- Soil: adapts to most soils; lean ground curbs its vigorous spread.
- Hardiness: USDA zones 3–9.
- Spacing: 18–24 inches, but be aware it spreads aggressively by rhizome and seed.
- Containment: in small gardens, plant the less-aggressive cultivars or species, or site where spread is welcome — Canada goldenrod can dominate a bed.
Propagation
Divide clumps in spring or fall — the spreading rhizomes make division effortless. Seed germinates readily after cold stratification but produces a thicket; most gardeners control rather than propagate it. Stem cuttings root in early summer.
Common problems
The main issue is over-enthusiasm: Canada goldenrod spreads vigorously and can crowd out less competitive natives in a mixed planting. Cut back hard after bloom or choose clump-forming relatives like Solidago rugosa 'Fireworks' for tidier gardens. Powdery mildew and rust appear occasionally in humid summers. Non-toxic to dogs and cats per ASPCA listings, and one of the single most valuable plants for supporting fall pollinator populations.
Canada Goldenrod — seeds, tools & books
Native range
Native to 48 states
