Blue flowers include: herbaceous flowers with blue flowers; large-flowered morning glory, lobelia, zucchini, shell flower, platycodon, phlox, single-flowered primrose, A bunch of blue (a variant of a bunch of red), limonium, commelina, African violet, gloxinia, iris, orchid, etc. Trees with blue flowers include hydrangea, jacaranda, periwinkle, etc. I think it is: Jacaranda/i?ie=utf-8&ct=201326592&lm=-1&word=%E8%93%9D%E8%8A%B1%E6%A5%B9&tn=16site_5_pg The most typical blue flower. There are others. For example, there are blue hyacinths, and now blue roses have been cultivated, as well as morning glories, and some blue-purple ones, such as lilacs and so on.