Borrichia arborescens
 
Common Names Silver Sea-Oxeye, Tree Seaside Tansy, Tall Sea-Oxeye Daisy
 
Zones 10–11
 
A salt-tolerant, evergreen shrub native to coastal regions of Florida, the Caribbean, and the Yucatán Peninsula, Borrichia arborescens thrives in harsh seaside conditions. Its fleshy, gray-green foliage and bright yellow daisy-like flowers make it a standout in restoration plantings and ornamental coastal gardens. Often found in rocky shores, sandy marshes, and brackish habitats, it forms dense colonies through rhizomes and rooting stems2.
 
Key Features
Growth Habit: Upright to rounded shrub; spreads via rhizomes
Height: Typically 2–5 ft (0.6–1.5 m)
Leaves: Opposite; leathery, obovate; gray-green; evergreen
Flowers: Yellow disk and ray florets; bloom spring through summer
Fruit: Small, needle-like achenes; dry and elongated
Ecology: Native to coastal dunes, beaches, and marshes; attracts butterflies
 
Growing Conditions
Light: Full sun
Watering: Moderate; drought tolerant once established
Soil: Tolerates sand, loam, acidic, alkaline, and saline soils
Temperature: Subtropical to tropical; not frost hardy
Humidity: High tolerance; thrives in coastal humidity
Propagation: Seed, cuttings, or division
Tolerance: Salt spray, seasonal flooding, trimming
 
Landscape Use Excellent for erosion control, low hedges, and habitat restoration in coastal zones. Pairs well with Sesuvium portulacastrum, Ipomoea pes-caprae, and Scaevola taccada.