One of the few asters commonly found in saline soils, Sea Ox-eye are unique due to their rhizomatous root system. These form small mats if possible and tend to show up in brackish or fresh marsh conditions in coastal ecosystems.
Borrichia frutescens (Sea Ox-Eye,Bushy Seaside Tansy)
Native: southeastern United States, Florida
Hardiness Zones: 10-11
Height: to 60 (rarely 90) cm tall
Diameter: to 30 centimeters wide
Root System: rhizamotous, creeping
Growth Rate: slow
Tolerates: salt spray and saltwater, drought (somewhat)
Problems (major): none
Problems (minor): rarely succumbs to diseases or pests
Soil requirements: grows alongside beaches, typically in well-drained sands (survives in thicker, consistently wet loams/clays in irregularly flooded brackish marshes)
Air requirements: tolerant of salt spray
Watering requirement: high, naturally grows in brackish marshes infrequently inundated by a mixture of freshwater and saltwater
Sun requirement: full sun
Leaf characteristics: obovate to elliptic, opposite, pinnate, simple, light green to gray-green, to 11 cm long by 3 cm wide
Flower structure: peduncle, short yellow rays, to 6 cm wide
Flowering frequency: late spring, early summer (May-July)
Fruit type: dried achenes
Fruit dispersal: wind, small vertebrates
Subterranean storage organ: rhizome
These are highly tolerant of saline conditions and commonly grow along brackish areas or beaches in the American southeast.
Occasionally used as a groundcover or mat in subtropical areas.
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