@randystreat spring has sprung when phlox blooms. I started this 2 years ago and it is a nice big patch now. I love how it grows around and over things. One of my favorite plants to put in the garden. Wish it bloomed more than it does.
@dawrenda I agree. But it blooms longer than a lot of spring flowers. Especially if you have different shades. They don't always bloom at the same time.