Sold in 7L pots. 
Recently potted on from a 5L pot.
A narrow, blue-leaved yucca, which forms a stunning spherical shape. Older bottom leaves naturally die off. Will form a trunk as it matures.
Care requirements: plant in full sun preferably in a very free-draining soil. We use 50:50 compost and zeolite. 
Hardy to -15c if kept in a dry and sheltered location