How to Prune Griffith's plumbago?
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. Prune from early to mid-spring.

Griffith's plumbago · Ceratostigma griffithii
Grow in well-drained soil in a sheltered, sunny postition
Shorten flowered shoots to about 1.5–2.5 cm from the previous year's growth. Prune from early to mid-spring.