I bought a clematis "avalanche" last April when it was in full bloom.So covered in white flowers you could barely see the leaves. I have it in a protected spot on my 8th floor balcony facing south east. It is currently covered in new buds and it's only mid January. All the research I have done states that its flowering time is early spring, march/april. Whats going on.I'm worried that if the flowers start opening in the next few weeks we may get a cold snap and all the flowers would die. Should I be concerned. Why is it blooming so early ???