I just bought to geraniums and both of them are starting to have yellowish leaves. One of them, I transplanted it to a bigger container with new soil and the other one is in the original container. The flowers seem to be burned by the sun. I already have two zonal geranium and they do just fine in full sun. I don't know exactly what the new type of geraniums are but they might be a type that doesn't like sun that much. The leaves are round with a darker circle inside. Maybe someone can help me with this.