IDK what time one 4 O'Clocks were born in but it wasn't Central Time Zone or Houston. Ours bloom around 6-8 pm. We rarely ever get to enjoy their wonderful scent. I love my 4 O' Clocks. BUT. They reseed way to easily and have grown all over my front bed. If you don't pull them out early, the bulb gets so large you have to dig them out. They grow very fast. They are leggy so plant them close together. They have filled the void in the center of a ring of azeleas. Now the center of that circle is solid pink 4 O' Clocks. But today I pulled one out between two loropetalum.