Sea hibiscus is a tropical evergreen shrub or small tree that thrives in coastal environments where few other plants dare to grow. Native to tropical Asia, this resilient plant has earned its common name by tolerating salt spray, waterlogged soils, and extended flooding with remarkable composure. Hardy in zones 10-12, it grows 12 to 25 feet tall and wide, producing showy seasonal blooms while serving as an excellent choice for hedges, rain gardens, and naturalized landscapes. The plant's ability to root where branches touch the ground and propagate easily from seed or cuttings has made it increasingly valuable in tropical and subtropical gardens worldwide, though it has shown invasive potential in southern Florida where it has escaped cultivation.
Full Sun
Moderate
10-12
300in H x 300in W
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Moderate
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Sea hibiscus thrives where conditions would overwhelm most shrubs: in waterlogged soils, shallow flooding, poor drainage, and even salty ocean winds. Its evergreen foliage and showy seasonal flowers create reliable year-round structure in tropical gardens. The plant's spreading branches naturally layer and root themselves, gradually expanding without requiring replanting. Propagation is effortless from seed or cuttings, making it simple to expand plantings or share with fellow gardeners. Its tolerance for nearly every soil type, from acidic to alkaline and poorly-drained to well-drained, means you don't need perfect conditions to succeed.
Sea hibiscus serves as a structural and functional element in tropical and subtropical landscapes. It works beautifully as a hedge plant, where its tolerance for difficult growing conditions and ability to establish dense branching provide practical screening and windbreak benefits. In rain gardens and naturalized plantings, it stabilizes banks and manages water runoff while adding ornamental value through seasonal blooms. Its salt tolerance makes it invaluable for coastal properties where salt spray damages more conventional landscaping choices. The plant's ability to spread through self-rooting branches allows it to stabilize erosion-prone areas, particularly in moist environments near water features.
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“Hibiscus tiliaceus is native to tropical coastal regions of Asia, where it has long been part of the natural shoreline ecology and local landscapes. Its common name, mahoe, reflects its cultural presence in tropical communities. As global horticulture expanded, this resilient coastal plant traveled to tropical and subtropical gardens worldwide, valued for its ability to thrive in challenging seaside conditions where conventional ornamentals struggle. Its journey demonstrates how plants adapted to specific ecological niches can find new homes in similar climates far from their origin. The plant's current presence as a naturalized species in southern Florida represents both the success of tropical horticultural introduction and the ecological consequences when such adaptable plants escape garden boundaries.”