There is a lot of enthusiasm (& some hype) for this fragrant, summer flowering Daphne. I thought I would quote from Michael Dirr’s Encyclopedia of Trees and Shrubs for some well judged, if US-oriented, opinion.
Daphne x transatlantica – this hybrid and its cultivars are all the rage in the Mid-Atlantic and New England States. It flowers sporadically throughout the summer and provides a sweet, delicate perfume. Habit is rounded and reasonably dense, with 1- to 1.75 inch long, glaucous blue-green leaves. Foliage does not develop fall colour. Four sepaled, fragrant, white flowers occur in groups of four to 20 in small inflorescences in May and June and sporadically thereafter. Prefers well-drained soils and partial shade. Appears more amenable to garden culture, yet I had a plant collapse in the container before making it to the garden. Observed in Bangor, Maine, in early September, and is more cold hardy than would be expected. Grows 4-5 feet high and wide. Zones (4)5 to 8. Caucasus. Eternal Fragrance has fragrant white flowers, blush pink in cooler climates. Flowers sporadically through summer and is semi-evergreen. Bred by Robin White.
It is an expensive plant (in the region of £35 wherever I have seen it) and in this cold weather, the fragrance is to be kind, elusive. I like the rounded taper to the glossy leaves and the flowers are good and big. Perhaps in the riot of spring and summer it might be a little lost, fragrant or no (whereas in winter, the scent of say, Daphne odora aureomarginata is standout gorgeous).
Hmmn. The jury is out.

