If you are referring to the clematis that I posted in bloom on my Instagram and Facebook this week from my garden, then the name is Nelly Moser and it is really more lavender than white with huge blooms. It can be found at any local nursery or even by going online as Nelly is one great clematis and so popular that I see if for sale wherever vines are sold. If you mean a clematis that is pure white, I grow 'Henryi' and have also posted photos of this variety. It is also common and easy to find at local nurseries and garden centers. Have fun finding these beautiful clematis. Keep growing, Marianne Binetti