Answer: In my experience this plant can simply be shy about blooming, especially if it is a seedling rather than grown from a cutting taken from a plant known to bloom well. This is a rampant grower and does best in full sun but tolerates some shade and has no "special" requirements to speak of. It does bloom on new growth of the season, so be sure not to trim it in spring or summer or you will be removing blooming wood. It is possible that an overabundance of nitrogen fertilizer could cause excess foliage and less flowering, but I don't think it would stop flowering altogether. Unfortunately about all I can suggest is patience. It may be small consolation but the flowers are lovely and worth the wait!
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