Is It Too Late To Cut Back Black Eyed Susan’s In DC ?

Question

I don’t have a photo

Answer 1

Spring is a good time to cut back all of your summer-blooming perennials. If they have started to regrow, just avoid cutting the new growth.

https://www.gardeningknowhow.com/ornamental/flowers/black-eyed-susan/black-eyed-susan-flower.htm