Answer: I know it's hard to believe, but five years is not a long time at all to wait for wisteria to bloom in wisteria terms. Some seed-grown plants can take nearly twenty years before deciding to bloom! A rule of thumb time frame is about eight years. So unfortunately I guess my advice is patience. Also, however, be sure not to provide an excess of nitrogen, and although it's a bit late for these plants, it's a good idea to plant named cultivars rather than seedling stock.
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