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Solidago altissima L.
Tall Goldenrod, Late goldenrod, Canadian goldenrod, Canada goldenrod
Synonym(s): Solidago altissima var. altissima, Solidago altissima var. pluricephala, Solidago altissima var. procera, Solidago canadensis var. scabra, Solidago hirsutissima, Solidago lunellii
USDA Symbol: soal6
Rough, erect, 2-4 ft. stems occur singly or in clusters. Small, yellow flowers are arranged along the upper side of branches, forming a feathery, plume-shaped inflorescence.
Two other similar species with arching flower stalks are Giant Goldenrod (S. gigantea), smooth-stemmed, often with whitish bloom, and with flower heads to 1/4 of an inch (6 mm) long, and Canada Goldenrod (S. canadensis), with sharply toothed leaves and very small flower heads only 1/8 of an inch (3 mm) long. These three species appear so similar to the casual observer that they share several common names. Although S. altissima and other Goldenrods are commonly blamed for hay fever, this discomfort is usually caused by pollen from Ragweed (Ambrosia spp.).
Plant CharacteristicsDuration: Perennial Habit: Herb Leaf:
Flowers in 3 inch pyramid Fruit: Size Class:
Bloom InformationBloom Color: Yellow
Bloom Time: Sep , Oct , Nov
, WV Canada: NB
, SK Native Distribution:
Most of s. Canada & AK,
s. to VA, LA
& CA Native Habitat:
Dry to moist roadsides, thickets, prairies & open woods
Growing ConditionsWater Use: Medium
Light Requirement: Part Shade , Shade
Soil Moisture: Moist
CaCO3 Tolerance: Medium
Soil Description: Moist to dry soils. Clay, Clay Loam, Medium Loam, Sandy Loam, Sandy, Caliche type
Conditions Comments: Height is determined mostly by the fertility and moisture content of the soil. The western form is ssp. elongata.
BenefitUse Ornamental: Perennial
garden, Pocket prairie Use Wildlife:
Attracts butterflies. Conspicuous Flowers:
PropagationPropagation Material: Seeds
Description: Propagate by seed or division of clumps. Use only strong outer rhizomes when dividing.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2010-11-20
Research By: TWC Staff