Toxic Plant Known to be toxic - Toxic to livestock and cats if ingested.
Image of Solidago altissima
Source: Cbaile19

Plant Names

image of Flowering plant
Solidago altissima
Tall Goldenrod
Verge d’or haute

Synonyms

late goldenrod
solidage très haute
verge d'or très élevée

Plant Characteristics

Bloom Colour: Yellow Bloom Period: Sep - Oct
Max Height: 6.0 feet
Max Width: 3.0 feet (spreads by rhizome)
Light Condition:
Full sun More than 6 hours of direct sun a day
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Moisture dry Tolerates dry soil condition
Moisture medium Tolerates medium soil condition
Lifespan: Perennial plants that will come back year after year
Gardener Experience:
plant spread by rhizome Spreads by rhizome
plant germinate easy Easy to germinate
plant self seeding Self-seeding
Landscape Uses:
rock garden Suitable for rock gardens
shoreline_rehab Suitable for shoreline rehabilitation
container suitable Suitable for container garden
Ecological Benefits:
butterfly host Butterfly host
keystones species Keystone species
Tolerates:
Deer Resistant Deer resistant
Rabbit Resistant Rabbit resistant
Limestone Tolerant Tolerates limestone conditions
Juglone Tolerant Tolerates juglone conditions
Transplantation Tolerant Tolerates transplantation
Special Features and Considerations:
causes skin rashes This plant causes skin rashes

Seed and plant distribution status

No seeds available for this plant.
We currently accept seeds for this plant

Plant Location

Native to Ottawa region: Yes

Distribution according to VASCAN

Distribution: Solidago altissima
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent

Thrives in Ecozones

  • Atlantic Maritime
  • Boreal Plains
  • Montane Cordillera
  • Prairies
  • Boreal Shield
  • Mixed Wood Plains

Ecological Benefits

Butterflies Supported by Solidago altissima

Specialized Bees Supported by Solidago altissima

  • Andrena aliciae
  • Andrena asteris
  • Andrena canadensis
  • Andrena chromotricha
  • Andrena hirticincta
  • Andrena nubecula
  • Andrena placata
  • Andrena simplex
  • Complexe Colletes americanus
  • Complexe Colletes compactus
  • Complexe Colletes simulans
  • Dianthidium simile
  • Megachile inimica
  • Melissodes agilis
  • Melissodes illatus
  • Melissodes trinodis
  • Protandrena andrenoides
  • Pseudopanurgus aestivalis

Complementary Plants

Substitute For Non-Native Plants

  • Oenothera (Non-Native Primrose)
  • Oenothera biennis (Evening Primrose Cultivars)
  • Oenothera fructicosa (Sundrops Cultivars)
  • Helianthus (Non-Native Sunflower)
  • NA (Black Eyed Susan's Cultivars)
  • Rudbeckia Triloba (Brown Eyed Susan's)
  • Echinacea (Coneflowers)
  • NA (Coreopsis cultivars)
  • NA (Non-native False Sunflower)

Sowing Information

Download Seed Envelope Labels (PDF)
  • Sowing depth: Surface sow
  • Sow anytime
  • Stratification duration: 0 days
  • Self-seeding

Harvesting and Seed Sharing

  • Harvest start month: November
  • Harvesting indicator:
    • Seeds have become fluffy and can be easily removed by shaking on gently pulling off from stem
  • Harvesting:
    • Shake seed head in paper bag
  • Seed viability test:
    • No test needed before donating
  • Packaging measure: 1 rounded 1/4 teaspoon
  • Seed storage:
    • Air dry in paper bag or open container, for a few days until crisp
    • Shake seeds to move them once in a while to prevent molding
  • Cultivar: No, you can donate without knowing the source as there are only straight species
  • No harvesting video available at this time.

Toxicity Notes

Toxic to livestock and cats if ingested.