New Garden Blooms

We have been in our house for just over three years. We have had these plants in the backyard in front of the Rose of Sharon and right next to the Lantana.

This plant has never bloomed. We would get buds and that would be all.

Now we have blooms. It's funny because the vegetable garden and roses have not done well this summer, but this plant finally bloomed.

They are pretty, aren't they? Does anyone know what they are? We have no idea.