I bought and planted one of these today:

(this is a picture of a euonymus plant I swiped from the BBC website. I’m trying to use imgred(see below) to avoid hotlinking, but it ain’t working. This is therefore experimental)
Also:

Philadelphus

And:
Spiraea

[so far a complete duck for the folks at imgred. A good idea. It’ll be even better when it works.][edit:it does!]