Yucca rostrata Sapphire Skies (Adam's Needle)
This broadleaf evergreen features a clumped, basal rosette of short, narrow, powdery blue-green leaves with long, curled white threads along the margins. A stalk will rise from the centre over the years, growing to 4 feet tall. Slow growth rate.
Blooms early spring to early summer
1-1.5 ft tall x 1-1.5 ft spread
HARDY to -20°F (-28.9°C)