About 5 years ago, I planted a jackmani(sp) clematis at my mailbox. It never got too big over those year, only reaching half way up the mail box post. This year, it's almost covering my mailbox completely and is taller than the mailbox! I've done nothing to it at all...no fertilizing or watering. Why the sudden growth spurt?? It is a 2X bloomer. I have flowers open now (not all of them), and then it's supposed to bloom again I think around fall. But it is not a prolific bloom in the fall...only 1 or 2 flowers, and that is it. I don't know what you call these things, but it will still have the flower "skeleton" (those long stingy things left after the flower has been spent) during the fall bloom. Am I supposed to remove these before the second blooming time? Thanks