If you want classic mockorange fragrance in a size that fits modern gardens, Philadelphus coronarius 'Illuminati Arch' is a great choice. This deciduous shrub makes a graceful mound with arching stems and clusters of white blooms that perfume the air in late spring into early summer.
Give your Mockorange 'Illuminati Arch®' full sun for the best flower show, but it will also perform well with partial shade. Plant it where you can enjoy the scent near a walk, patio, or entry, and allow room for its mature size of about 46-50 inches tall and 46-50 inches wide.
Water regularly as it establishes, then maintain even moisture during prolonged dry spells. A well-drained soil is ideal, and this selection is noted for handling drier conditions once established. Mulch helps conserve moisture and moderates soil temperatures.
Because it blooms on old wood, plan any shaping or size control right after flowering. Avoid heavy pruning in late winter or early spring, which can remove the buds that produce the season's bloom. A light thinning of older stems after bloom helps keep the plant full and floriferous.
Hardy in USDA Zones 5-7, use it as a small specimen, in mixed shrub borders, or as a low flowering hedge. Its clean foliage and arching habit keep it attractive long after the blooms finish.