Answer: Campsis radicans or trumpet vine can be shy to flower, sometimes requiring a number of years to settle in and decide to bloom. It grows best in full sun all day long, in average soil and with average soil moisture. Overfertilizing can cause it to grow overly lush foliage at the expense of blooms. Finally, pruning at the wrong time can remove blooms. This vine should be pruned in the winter to very early spring. Pruning later in the growing season will remove blooming wood because this plant blooms on new growth of the season. If you have had your vine for sewveral years, you could try trimming it back very hard this winter/early spring to try to stimulate ample vigorous new growing shoots for next summer. I hope it blooms for you soon.
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