We transplanted this in our area of the world where its not seen as hardy.. We must have mulched it and cared for it well. Its one of the biggest anyone has seen growing in this area. Its was planted around 1990. When it blooms by the many thousands for a good month. In the morning and eve when there is a slight breeze it smells like you are walking in an enchanted sweetness as if you were in a giant rose bud.. Down in the warmer southern regions they grow like weeds.. Not here.