How to Prune one-leaf Cape tulip?
No pruning required

one-leaf Cape tulip · Moraea flaccida
Also known as: Bobart's ornage iris
Grow at the base of a warm, sunny wall in a well-drained, humus-rich, moderately fertile soil in full sun with midday shade. Protect from excessive winter wet. Under glass grow in a loam-based compost (JI No 2) with added sharp grit. Water sparingly when growth begins and freely in full growth. Dry off as leaves wither, to ensure a dry dormancy from mid-summer to autumn
No pruning required