Answer: Constant breezes, especially salt-laden breezes, can really take a toll on plants. Those that best tolerate seacoast weather include Convolvulus sabatius (morning glory), Achillea (yarrow), Agapanthus (Lily-of-the-Nile), Armeria (thrift), Chrysanthemum frutescens (Marguerite daisy), Dianthus, Euryops, Geranium Lantana and Santolina. Only the morning glory will actually twine through the railing, but Lantana will cascade over a railing if you tie it up as it grows. You might try Rosa rugosa or Rhus integrifolia (lemonade berry) Both will grow under the conditions you describe and can be trained to the railing, eventually cascading over it. Hope these suggestions help you find just the right plant for your balcony.
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