I have Lady in Red growing wild in my yard. Salvia coccinea grows like a weed here in my climate. It's seedlings pop up all around my yard. I leave most of them for the birds and butterflies as a nectar plant. I like the red color of the blooms. It is also more compact than some of the other S. coccinea cultivars.
It is prone to powdery mildew if it is exposed to too much rain and humidity. You can cut it back hard and it will grow new branches and leaves. It is an annual plant and freely produces seeds.