Do not plant daffodils directly in mulch, as mulch alone doesn't provide enough insulation to prevent freezing during the winter cooling period. Plant daffodils at an 8-inch depth, including a 2- or 3-inch layer of mulch applied above the soil.
About this Author
S.F. Heron is an avid gardener with three years of experience in online writing and a working background in aviation and earth and ocean sciences. She is published on various sites, including Helium, eHow and Xomba. She holds a Bachelor of Science degree in journalism from the University of Maryland.