@Tienito, Every Iris I have planted increase to a clump. Have you looked at the variegated ones I suggested. I love them so much because of the long season interest. They clump like all iris and you have some interest after the flowers are gone,
I planted Beverly Sills in front of the white and green variegated iris. Beverly Sills blooms earlier, the pink was pretty against the white and green leaves, then later the variegated bloom extending my bloom time.
https://www.gardenia.net/plant...
Yellow Green variegated
https://www.monrovia.com/plant...
