I am a very new gardener and my yard is currently quite chaotic due to my lack of attention. I would like to shape up the big plants and bushes in my yard but am unsure when the best time to do that would be. I'm looking for any tips regarding the care of, but especially pruning and shaping of clematis, crepe myrtle and forsythia. Also, is there a certain time to prune dead branches and to shape live ones from a tree that flowers in the spring. I don't know what it is called but it is beautiful and I don't want to cause damage to it. Thank you! Jennifer