Experts and BHG readers answer.
Can I plant perennials and bulbs together?
Thanks for writing. As a general rule, you can plant groundcovers and other "loose" perennials directly over your bulbs. But avoid perennials such as coneflower, baptisia, peonies, and others that form a dense crown --- your bulbs will have trouble growing up through those plants.
---Justin, Senior Garden Editor, BHG.com