Yucca (Filamentosa) Adams’ Needle Yucca filamentosa
This is a evergreen plant that has spiny leaves. Large clusters form. The flower is white to cream color in the summer. Tall spikes on this plant make it a great accent to any xeriscape garden. Do not plant the Yucca above 6,500 feet. It will grow to be 3′ tall and 3′ wide.