How to Prune lavender 'Pukehou'?
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.

lavender 'Pukehou' · Lavandula 'Pukehou'
Grow in sharply-drained soil in full sun. See lavender cultivation 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.