Family:     Asteraceae (Sunflower family)

Duration:  Perennial

Height:     40 -100 cm (1 to 3 ft)

Blooming: Sept. - Oct.


Riddell's Goldenrod

Solidago riddellii Frank ex Riddell

Stem: glabrous (no hair) and erect.  

Flowers: are in 30-450 yellow flowerheads. These are arranged in a flat-topped arrangement set up like stages on risers.

Leaves: the basal leaves usually wither by the time the plant flowers. The leaves are alternately arranged and fold longitudinally along the midrib leading to a sharp point. Many times the petioles are winged. The leaves have a rough texture.  

Sun: Full 

Ideal condition: moist, rich soil in full sun.

all photos by Nathanael Pilla

Landscape: A wonderful goldenrod for adding that fall yellow to your flowerbed. It is low maintenance and does not usually get powdery mildew as with other goldenrods.

Comments: Riddell's goldenrod is very similar to Ohio goldenrod. Riddell's goldenrod has longitudinally folded leaves and has 3 or more longitudinal veins. Ohio goldenrod has one longitudinal vein and is not folded.   

Etymology: The epithet name riddellii is in honor of the botanist, John Leonard Riddell. The genus, solidago, comes from the Latin word, solida meaning "whole" and ago meanining "to make".

Species Present and Native
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Michigan City, IN., 46360 

The mission of Save the Dunes is to preserve, protect and restore the Indiana dunes and all natural resources in Northwest Indiana’s Lake Michigan Watershed for an enhanced quality of life.

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