Flat-topped goldenrod

Manitoba’s only host of the Euthamia gall midge.

FLAT-TOPPED GOLDENROD (Euthamia graminifolia)

This is a goldenrod of moist to wet sandy or gravelly soils. Plants may appear as a single stem or be heavily branched toward the top. A mid-to late season bloomer, it provides a food source for a wide variety of insects. Flat-topped goldenrod is Manitoba’s only host of the Euthamia gall midge, which makes itself known by the black leaf spots or blisters it causes.

Grows with panicled aster, stiff goldenrod, woolly sedge, Buxbaum’s sedge, cord grass, and shrubby cinquefoil.

Flower Colour: yellow
Life Cycle: perennial
Sun Exposure: full sun
Bloom Period:  July – September
Height: 2 – 3 ft
Soil: moist – wet