Anyone? I have some pictures here. Another two flowers blossomed and they were gone the next day. They are just laying on the ground. Looking pretty weak.

What growing conditions are they in? They like lots of sun and even moisture IME. I've never grown salmon colored ones and am not growing any yellow ones this year to check how long blossoms last, but the years I have grown them, it's been in a large deep pot (more than 1' in all directions) in a sunny spot with regular watering. They are a bit slow to start, but by this time of year mine were generally multistemmed and most of the way up a 3'-4' trellis and covered with blooms. Since there were a lot of blooms, even if each individual bloom didn't last long, it still had lots of bloom. So I am not sure why, but yours seem like perhaps they aren't getting all they need or perhaps the salmon colored plants aren't as vigorous as the yellow and orange ones that I've grown.

If you add info on your zone and location, it helps with questions like this since different plants behave differently in different locations. Here's how:

Go to Your Houzz in the upper right of every page, click Edit Profile, and on the left side click advanced settings. Well down the advanced settings page is a blank labeled Climate Zone for Garden Forums along with a link to find your zone.

If you add info on your state or the nearest large city you will get even better information since zone only relates to average coldest winter temperatures.

Then return to the top of the page and click Done Editing.