I am seeing a lot of gardenias that look like this. Some are new installed plants 1-2 years old and some are very established plants. I've seen this in various locations. I've had a few customers ask about theirs. We had a pretty cold winter, a few snow/ice storms, and a few nights that's reached single digits. It's stayed wet and things are finally starting to change. Is this winter burn? I've fertilized the shrubs shown about 1-2 weeks ago with 10-10-10. I haven't notice any new growth but temps are finally in the 70/80s this week. What can or should be done?