How much room is needed for a papyrus and can the roots break down block walls or swimming pool walls?
Growth Habit of Papyrus Plants
Certified GKH Gardening Expert
These plants typically do not have very invasive root systems and are normally considered annuals in most areas anyway. I would, however, give them at least a couple feet of spacing away from walls or other structures. For more info on growing these plants, this article should help: https://www.gardeningknowhow.com/ornamental/foliage/papyrus/papyrus-plants.htm