This one is deciduous, blooms in spring only. The fragrance hasn't been very strong for me (nor has the plant, for that matter). For long bloom you would plant Abelia x grandiflora or A. 'Edward Goucher'. Possibly A. chinensis is best for fragrance, but its flowers are only 1/4" long.

I bought one a couple of years ago based on a large blooming specimen that smelled very good at the Collector's nursery, kind of a typical white flower smell like orange blossoms, honeysuckle or daphne, can't remember too well. It is rather floppy and not in a very good location, and I haven't seen any bloom on it yet. I should stake it up and water and fertilize it more this year to see if I can get some blooms. The one I smelled had way more fragrance than my A. grandiflora or Edward Goucher. Being deciduous is a disadvantage. though, and the lax growth.

Hemnacy, I heard some good feedback on this on Viginia forum. Someone there mentioned this with a fragrance of lilac/pineapple. The one I bought is indoors in 10inch container with lot of green leaves. I will move this into ground after flowering in spring.

It has been a couple of years since I smelled it, but it was heavenly. I went out and looked and I had moved it last fall and forgot, so hopefully it will do better in its new location.

I similarly bought Lonicera syringantha for its very fragrant small purple flowers I smelled in a nursery, but it is also a rangy sparsely foliaged deciduous shrub that is rather inelegant. I will have to try to do a better job of pruning and fertilizing both and see if I can get more bloom.