It takes a year to really know the levels of sunlight you have in different areas. I've lost quite a few plants because of that, I would plant them in the winter when the sun is lower and comes under some of the things producing shade, come summer they would be getting only a few hours of afternoon sun. That's a hard thing to fix, I've finally decided that some of my plants will do better in summer and others in winter and as long as they can survive the off season I'll be happy.
