8 Ornamental Grasses for Stunning Coastal Gardens

Ornamental grasses are among the easiest plants for coastal design — nearly all tolerate salt spray and harsh ocean winds. They look magnificent massed, which helps wind move up and over plants without damage. But the number-one reason to love them in coastal landscapes: they transform breezy atmosphere into a graceful sense of motion. Wind catches wispy leaves, creating movement that evokes shifting sand dunes or ocean whitecaps. These eight varieties suit any coastal garden.

Blasen Landscape Architecture

Mexican Feather Grass (Nassella tenuissima)

Finely textured and loosely swaying, this grass fits the weathered, natural coastal look. Reaching 3 feet tall, it tolerates harsh winds, lean sandy soil, and little water once established. Cut back to 5 inches when blades clump like large dreadlocks.

Kathleen Shaeffer Design, Exterior Spaces

California Red Fescue (Festuca rubra)

Native to California, this makes an excellent lawn substitute in coastal areas. It stabilizes sandy soil and develops a flowing texture and healthy green look with minimal water or care.

Daniel Nolan for Flora Grubb Gardens

Flax Grass (Phormium)

Available in a wide array of colors and sizes — from dwarf 1-foot specimens to 8-foot spiky giants (most modern cultivars top out at 5-6 feet). Colors include bright red, gold, shiny black, cream-variegated, and more. Wide blades make immediate dramatic impact. While wind can damage blades, vigorous growth means periodic thinning of damaged leaves yields a stunning showpiece.

Debora Carl Landscape Design

Golden Sweet Flag (Acorus gramineus 'Ogon')

One of few ornamental grasses happy in partial or full shade. Cheery golden color brightens shady coastal spots, tolerates salt winds easily. Reaches only 2 feet tall and 3 feet wide, prefers regular water, and can even work in water features or bog plantings. Evergreen and easygoing.

Huettl Landscape Architecture

Feather Reed Grass (Calamagrostis x acutiflora 'Karl Foerster')

Upright, slender grass with blonde flowers from late summer through early winter. Reaches 4 feet tall but only 2 feet wide — effective against houses or near pathways where wider plants would overtake space. Prune once yearly in late winter/early spring to 5 inches for fresh spring growth.

Melissa Gale Photography

Cape Rush (Chondropetalum tectorum)

Easy-to-grow, tolerating a wide range of soils with regular water. Thrives in full sun or at least 5 hours direct sunshine, reaching ~4 feet tall and 6 feet wide. Fits modern coastal gardens beautifully — dark brown (almost black) bracts and flowers create strong displays with rusty metal or black resin planters. Evergreen, no pruning needed.

Lankford Associates Landscape Architects: This landscape features two coast-loving favorites.

Blue Oat Grass (Helictotrichon sempervirens)

Evergreen sun-lover demanding good drainage but otherwise unfussy. Maintenance: comb foliage every few months to remove beige leaves. Wear rubber gloves and run fingers through grass — old leaves stick to rubber and pull out easily.

Maiden Grass (Miscanthus sinensis 'Gracillimus')

Reaches ~5 feet tall and wide for a bolder statement. Purple flower plumes in fall are wonderful against coastal sunsets. Not evergreen — cut back to 6 inches in late winter/early spring.