QuestionsHow to growFlowersBulbsbulbs in bark mulch 0 Vote Up Vote Down judy o keeffe asked 17 years ago Hi Gerry, I’d appreciate your advice on the following matter.I would like to use decorative bark mulch in my border but Im concerned about my daffodil bulbs.Can daffodil bulbs grow through three inches of decorative bark mulch? Thank you. 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Daffodils will grow through bark mulch without difficulty.Â