Yellow flowers

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Photo of ashy sunflowers showing flowers, leaves, and stems.

Ashy Sunflower

Helianthus mollis

Photo of cup plant flowerhead.

Cup Plant (Cup Rosinweed; Carpenter’s Weed)

Silphium perfoliatum

Photo of a giant ragweed plant.

Giant Ragweed

Ambrosia trifida

Photo of several big bluestem seed heads against a blue sky.

Grasses

All true grasses (species in the grass family).

Photo of the upper portions of two Jerusalem artichoke plants.

Jerusalem Artichoke (Sunflower Artichoke)

Helianthus tuberosus

Edible

Photo of southern naiad aquatic plant with a penny for scale

Naiads (Water Nymphs; Waterweeds)

Najas spp.

Photo of three ox-eye or false sunflower flowerheads

Ox-Eye (Sunflower Heliopsis; False Sunflower)

Heliopsis helianthoides

Photo of starry rosinweed flowerheads on a black background

Starry Rosinweed

Silphium asteriscus

Photo of many blooming ashy sunflower plants, showing gray-green leaves.

Sunflowers

Helianthus spp.

Photo of many tickseed sunflower flowerheads.

Tickseed Sunflower (Bearded Beggarticks)

Bidens aristosa

Photo of wholeleaf rosinweed flowerhead

Wholeleaf Rosinweed

Silphium integrifolium

Photo of yellow crownbeard flowerhead.

Yellow Crownbeard

Verbesina helianthoides