Seaside Daisy Plants: Learn About Growing Seaside Daisies

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Image by Stan Shebs

By Mary H. Dyer, Master Naturalist and Master Gardener

What are seaside daisies? Also known as beach aster or beach daisy, seaside daisy plants are flowering perennials that grow wild along the Pacific Coast, from Oregon and Washington south to Southern California. This tough little plant is found in rugged environments such as coastal scrub and sand dunes.

Information About Seaside Daisy Plants

Seaside daisies (Erigeron glaucus) are low-growing plants that reach heights of 6 to 10 inches, with a spread of 1 to 2 feet. This evergreen perennial consists of glossy, grayish-green foliage. Attractive blooms with ice blue, daisy-like petals (sometimes with a lavender or pink tint) surrounding a large, bright yellow center.

Seaside daisy plants are durable, but they don’t tolerate extreme cold. This plant is suitable for growing in USDA plant hardiness zones 8 through 10. In mild climates, seaside daisies may bloom well into winter.

Seaside Daisy Planting

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Growing seaside daisies prefer well-draining soil and full sun, but the plants will tolerate light shade, especially in hot climates. The plant is well suited for xeriscaping, and also works well in rock gardens, borders, flower beds, in containers and on slopes. Seaside daisy is highly attractive to butterflies and the colorful visitors love the long growing season.

Seaside Daisy Care

Seaside daisy care isn’t complicated, but it’s important to locate seaside daisy where the plants are protected from afternoon sunlight, as the intense heat will scorch the plant. Otherwise, just water the plant about once a week during dry weather. A 3-inch layer of mulch keeps the soil cool and moist.

Deadhead wilted blooms regularly to encourage continued blooming and to keep the plant tidy. Trim the plant down if it looks leggy in late summer; you’ll be rewarded with a rejuvenated plant and another flush of colorful blooms.

Seaside daisy plants are easily propagated by stem cuttings, or by dividing the plants in early spring.

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