|1||15C+||Indoor||Grow as a houseplant or under heated glass.|
|2||10 to 15C+||Indoor / Outdoor||Grow indoors, or outdoors in summer in a sheltered spot|
|3||5 to 10C||Tender||Grow outdoors in summer, and in a heated glasshouse in winter.|
|4||1 to 5C||Tender||Grow outdoors or under glass without risk of frost.|
|5||-5 to 1C||Half-Hardy||Hardy in coastal/mild/sheltered areas. Will not tolerate hard/sudden frost. May require winter protection in situ. such as fleece or straw mulch.|
|6||-10 to -5C||Hardy||May suffer at altitude, central/northerly locations, harsh winters, cold gardens and when grown in pots.|
|7||-15 to -10C+||Hardy||Will survive most severe winters but may be at risk in central/northerly locations and in pots. Top growth may be destroyed but will usually re-grow.|
|8||-20 to -15C||Hardy||Will survive severe winter, but may need protection when grown in pots.|
|9||-20C & Colder||Very Hardy / Hardy||in the severest European climates.|
Originating from Texas
Forms a perfect sphere of narrow blue/green, sharply pointed leaves on a thick trunk. Similar in appearance to Yucca rostrata, but the leaves are slightly broader, wider and more rigid.
They branch after flowering, and mature specimens can be multi-headed. These are very hardy Yuccas and will tolerate average or even cold UK winters.
They may be damaged in severe winters such as 2010 and we would advise covering to protect from prolonged periods of snow and ice.
Grow in poor, sharply-drained soil in full sun.
Height and spread after 4 – 5 years 80cm x 50cm
Semi mature height and spread after 10 – 11 years 1.5m x 50cm
Potential height and spread after 25 years 3 – 4m x 1.5m, width is dependent on flowering and subsequent branching.