QuestionsHow to growTrees and ShrubsPruningClematis 0 Vote Up Vote Down ALISON FINNEGAN asked 16 years ago HELLO AGAIN,MY CLEMATIS PLANTS ARE NOT FLOWERING THIS YEAR,THEY DID AROUND APRIL LAST YEAR.ANYTHING I CAN DO? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago Plants normally flower at the same time each year. If they have not flowered, it is for some reason, such as pruning back.