How to Prune Christmas pride?
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. If flowering is on last year's growth, prune after flowering; if on current-year growth, prune the following early to mid-spring.

Christmas pride · Ruellia macrantha
Under glass grow in containers using loamless potting media (such as multipurpose compost) in bright filtered light with high humidity. Water freely during the growing season and apply balanced liquid fertilizer monthly. Water moderately in winter. Keep at minimum 12°C
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. If flowering is on last year's growth, prune after flowering; if on current-year growth, prune the following early to mid-spring.