This cultivar is listed as triploid in the paper 'Pollen diameter and guard cell length as predictors of ploidy in diverse rose cultivars, species, and breeding lines'

Even with spraying this beautiful mini always defoliated from blackspot in my s. Ontario garden. Continued to flower even when most leaves had fallen. Eventually pulled it out but have found nothing yet to match those gorgeous little blooms with their elegant buds and orderly petal arrangement.