Extremely common on unkempt ground out of shade. It is a climbing , quite invasive, perrenial. It is often seen growing up one side of a hedge eventually reaching the other side. Also growing up fences, generally metal fences that have been neglected. It is often a severe problem in gardens, choking other plants. Grows from long rhizomes. The flowers ahve no scent but are rich in nectar and attract moths. Flowers from July to September. Perrenial.