I have only been growing zinnias successfully for a few years, but I have fallen in love with them! Years ago when I tried to grow zinnias, I had no success, so I gave up on them. Then about five years ago I decided to try again, once I learned that they needed to be planted later in spring. This made all the difference in the world, since I live in an area where spring can be cool and rainy. Here are some of my zinnias.