Dasylirion quadrangulatum

Under glass grow in a mix of 2 parts each loam and sand, and 1 part each leaf mould and peat substitute. provide full light and low humidity. In the growing season, water freely and apply a balanced liquid fertiliser monthly; keep almost dry at other times. In summer, move containerised specimens outside. Outdoors grow in very sharply draining soil in a very sheltered, sunny spot

No pruning required

Propagate by sowing seed at 21°C in spring

May be susceptible to mealybugs and scale insects

Generally disease-free