Christmasberry (Lycium carolinianum)

Full sun
Average water needs
Bloom time: Fall and Winter
Size: 6-8 ft tall x 3-5 ft wide
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Coastal plant. Fruits eaten by birds. Attracts hummingbirds. Nectar plant for butterflies. 
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https://www.fnps.org/plant/lycium-carolinianum​
https://florida.plantatlas.usf.edu/Plant.aspx?id=3149