A modern reference to temperate woody plants, including updated content from this site and much new material, can be found at Trees and Shrubs Online.

Philadelphus zeyheri Schrad. Ex DC.

Modern name

Philadelphus coronarius L.


P. coronarius var. zeyheri (Schrad.) Hartw. & Ruempl.

A deciduous shrub of very vigorous spreading habit up to 8 ft high, considerably more in width; bark deep brown, slightly peeling; young shoots glabrous. Leaves broadly ovate to lanceolate, tapered at the base, slender-pointed, varying from coarsely toothed to nearly entire, 212 to 4 in. long, 34 to 2 in. wide, glabrous above, downy beneath along each side of the midrib and chief veins, with occasional hairs between. Flowers pure white, 112 to 134 in. across, produced during June in a terminal corymb of three to seven blossoms (sometimes solitary). Petals oval; style distinctly longer than the stamens; calyx glabrous, with slender lobes 12 in. long.

This philadelphus, of unrecorded origin, was in cultivation early in the 19th century and reputed to have come from N. America. It was compared by de Candolle to P. coronarius, differing in its leaves being rounded at the base and in its fewer, larger and scentless flowers. It is treated by Dr Hu as a variety of P. coronarius, but some authorities consider it to be a hybrid between that species and P. inodorus var. grandiflorus.

It is very distinct in its comparatively low, spreading habit, but its flowers are scentless, it blossoms poorly and is of inferior quality. The young shoots are apt to be killed back in winter, which may be due to their sappy vigour.



Other species in the genus