Cindi, glad you got home safe and sorry to here that you have been ill! Pneumonia is no joke!! Take care of yourself and don't over do it trying to get things in order again. I will leave giving advice on the fertilizing to the others closer to you. Here, I normally do my second fertilizing after the first flush which will probably be in about two/three weeks.
Looking forward to all your pics from your trip and especially Sangerhausen and Kordes!
Here a couple of grocery store minis that I planted in the garden - pics from today.
Got this one last year - Infinity bred by Rosa Eskelund of Roses Forever
Also last year - Princess of Infinity - Rosa Eskelund
This one has been potted since 2013 and over winters outside under a bunch of leaves - Belami Kordana
(it has gotten really potbound and should be planted out)