Q.Papayrus plants
How to winterover Potted Papayrus plants from my fish pond Iam in the Northeast

Certified GKH Gardening Expert
Since this variety is not cold hardy, you will want to bring it in and treat it as a houseplant. The care might be different than one would expect for a houseplant. You will need a good source of south facing window light. If you do not have this, then you will need to put them under indoor horticultural lighting. This article will give you more detailed information: https://www.gardeningknowhow.com/ornamental/water-plants/wgen/winterizing-water-plants.htm