How to Prune fringed rue?
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.

fringed rue · Ruta chalepensis
Also known as: Sicilian rue
Grow in moderately fertile, well-drained soil, in full sun or partial shade. Will thrive in a hot dry site
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.