QuestionsHow to growTrees and ShrubsPruningpruning lavandula and kniphofia 0 Vote Up Vote Down Brendan Martin asked 16 years ago I’m looking for information on how to prune both lavandula angustifolia and kniphofia flamenco 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Lavender is pruned by clipping over after flowering has finished. Kniphofia is not pruned, just take away the spent flower stems.