Bill and Kelly's Yucca is in bloom.  Aren't the flowers pretty against the Leland Cypress backdrop?  

It is Yucca filamentosa.  There are threads on the edges of the leaves: filaments.  If you enlarge the picture, you can see them.  My books say that Yucca filamentosa is native to the desert Southwest, but it has adapted itself to the Appalachian mountains too.  I'm pretty sure Joel planted this one years ago;  it doesn't look native in this spot.  And this is the kind of plants he liked.  

 

Siri told me that Yucca is the state flower of New Mexico.  ;D   

 

HAPPY GARDENING!!!