A native shrub, one of its common names is Northern Bush Honeysuckle. It's on Indiana's threatened and endangered list, where it is noted as "rare".
The garden designer suggested it, and I looked it up and then said yes. I said yes to most of the plants she suggested, as I recall, and was enthusiastic about all her plant choices.
She might recall that I was a gardener with definite likes and dislikes, who had to be convinced on the merits of some of the plants she suggested.
Either way, look at that pretty yellow flower of the Diervilla, now blooming in my garden, a hint of what's to come on Garden Bloggers' Bloom Day next week on the 15th.