(Click on underlined title to see more text)Yucca schidigera, potentially grows up 10 to 12 feet, but usually much less, 6 foot is average.  Other plants in top photo, of the Yucca in bloom, are Lemonade berry in back, Artemisia californica in middle area, one Salvia mellifera intermingled a bit on left.  Other plants in bottom photo are Lemonade berry to the left, Cholla cactus in center, Bladderpod at right.  Photos North Clairemont at top, Torrey Pines Park at bottom.