How to Prune mock orange 'Norma'?
Cut flowered growth back to strong young shoots below, removing up to a fifth of old stems near the base each year. Prune immediately after flowering.

mock orange 'Norma' · Philadelphus 'Norma'
Grow in moist, well drained soil in sun to partial shade. Plant bare root plants in winter when the ground is not frozen or waterlogged. Incorporate lots of well-rotted manure or garden compost to improve the soil and water in well. Mulch in spring
Cut flowered growth back to strong young shoots below, removing up to a fifth of old stems near the base each year. Prune immediately after flowering.