About the Yucca -
Variegated :
The Variegated Yucca, Yucca glauca variegated,
have stiff evergreen rosettes and are part of the
scene in hot dry Central and North American
scrublands. Yuccas are hardier than they appear, and
only fail in cold exposed inland positions, where
they are better grown as container plants. Otherwise
they are handsome architectural foliage plants for
dry, sunny borders.
Yucca filamentosa makes dense clumps of stiff
leaves 30 inch or so long and edged with fine curly
hairs. The remarkable flower-spikes, 6' or more
high, appear when plants are five or more years old.