|I never get flowers on my Wisteria. It's on the south side of my porch. I never clip it back. Last year I didn't water it thinking this was the problem.|
|Pruning and training are important for bloom production in Wisteria. Begin by deciding what shape you want your plant to be and remove the stems and long streamers that interfere with the desired framework. Pinch back side stems and rub out any buds thatdevelop on the trunk. Pruning branches will promote additional branching, and encourage blooms. You will eventually get fat flower-producing spurs on pruned branches. Each winter, cut back excessive growth, but don't cut off the fat flower buds. If your plant fails to flower after this treatment, withhold nitrogen fertilizer for one year. By that time, your plant will be mature enough to bloom, and you'll have encouraged it to bloom by correctly pruning it. Established Wisteria's don't need a lot of supplemental water in the summer.