Hi Tina
My you do have it hot there. Anyway lets try to answer your question. The first looks like the result of insect damage in the bud stage. We have an insect here called the Capsid bug, which attacks the buds in early June, and causes this type of problem. The second is a natural condition called fasciation. cells divide erractically, often due to insect damage or frosts. it is perfectly harmless so dont worry. The third is a thing what we in Britain call SDS. (Sudden Death Syndrome). We have no idea what causes this. The plant just keels over and dies, no matter what you do to try to save it. Sometimes in a pot of five plants, it will just happen to one, and all the others are OK. Finally with white varieties, they do like shade. The minor thing with too much sun is they will go pink, and the worst they will die.
HTH
John