Sea oats, scientifically known as Uniola, are another great option for coastal gardens. These grasses are native to coastal areas and are well-suited to sandy soils. Sea oats have attractive, arching seed heads that add visual interest to the garden. They are also highly tolerant of salt spray and can withstand strong winds, making them ideal for coastal landscapes. Additionally, sea oats play a crucial role in stabilizing sand dunes and protecting coastal ecosystems.