Your Mom is growing zinnias in her garden. Zinnias are grown all across the southern part of the US and come in many sizes and
shapes. You notice in your mom's garden there are lots of differences in the zinnias there. Why are these zinnias so different?
some could have gotten more shade or sun depending on where they were placed ,or some could have had trouble growing,plus some may have gotten more rain , it all really depends on where the plants are placed