Answer: All new plants will need to be watered regularly until they become established, but once that happens, the following are water misers:
Flowering shrubs include Escallonia, Grevillea, Echium, Acacia and Buddleia. Flowering vines include Calylophus harwegii, Convolvulus mauritanicus, Sunrose, Lady Bank's Rose and Wisteria. I'm afraid Clematis will require more frequent watering than you can provide.
Hope you find just the right plant for your fence!
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