It wouldn't be right if I didn't have rock roses, Pavonia lasiopetala, in my garden. I think the first one came from some seeds I picked along the edge of Lady Bird Lake. Once you have them there is no getting rid of them even if you wanted to, and I don't. They are a welcome flower throughout the spring summer and fall. They tolerate all kinds of abuse and seem to have no pests. The only thing that they are a little guilty of, is seeding themselves where you don't want them. Along with the rock rose are those annoying morning glories, Ipomoea, that also have similar habits. Both these plants are growing right up through the middle of an Indian hawthorn, Rhaphiolepis idica,threatening to suffocate it. They have been shading the hawthorn from the strong sun so if I were to remove them the plant would suffer from sunburn.
The flowers close up at night, as do the flowers of morning glory, but there is always the guarantee that there will be new flowers open in the morning.