Hello there, I am a new gardener. I decided to plant hydrangeas and zinnias, and they are doing well, but I am scared that I won't be able to keep them healthy since I don't really understand how to take care of plants. I have read a lot about taking care of plants, but it gets confusing at times. I hope I can get help with any questions and problems I may have from the members. My first concern is how much sun should hydrangeas be exposed to? They get full sun all morning, until about 3pm. Also what kind of fertilizer do I use for zinnias? Thank you very much. P.O.