Beginner Gardening: Name the plant and teach me how to care for it!, 1 by ryduj

ryduj wrote:
Hi,

I'm a new homebuyer, and therefore, a first time gardner. My home came with these little flowering plants in the front yard, but I can't figure out how best to care for them and get them to flower. I've never really gardened before, so I don't even know if I'm using the right words to describe it, but here goes: It's got a round base of long straight leaves that kind of come up, like a round fountain. From the base, there are long stems that come up about 2 feet and at the end of the stems is a round cluster of bluish/purplish small flowers. I pulled out a few of the dead stems and there's a bit of an onion-y smell to the stems. Here's a picture.

If you could tell me what it is and how I should care for it to keep it looking pretty, I'd appreciate it!