well hey there. That bulb is a lily bulb. White Henryi.
That retaining wall was actually done on a whim. The idea hit me. Next thing you know I'm at home depot loading up a pallet of them. But it turned or really good. It added layers and texture to the front of my house I thought. I'm pondering putting a flower bed in the front of them. Don't tell Ramona that though!
She is a great flower peddler.