University of Florida

Swamp Sunflower

Swamp sunflower is a fall-blooming perennial that can carry a touch of summer into the fall garden.

Starting in late summer or early fall, the two- to three-inch flowers appear, sporting rich yellow petals and brown or burgundy centers.

The plants grow four to six feet tall and are perfect for the backs of borders. A hard prune in June keeps them more compact and well-branched.

Like all sunflowers, this one performs best when grown in full sun. It’s salt and flood tolerant, making it a good choice for coastal areas and rain gardens.

This Florida-Friendly plant is relatively low maintenance but can be prone to infestations of powdery mildew and spittle bugs.

You can divide swamp sunflower each year to create new plants, making it easy to pass along to friends.


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