How to Prune heather 'Ruby Slinger'?
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.

heather 'Ruby Slinger' · Calluna vulgaris 'Ruby Slinger'
Grow in well-drained, acidic soil in full sun. See Hardy heathers for further advice
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.