How to Root Plant Cuttings in Water. Some have nodes so make sure your cutting includes that some just require you to cut off a leaf and some produce pups all by themselves. How To Root Plant Cuttings In Water For Propagation Plant Cuttings Propagating Plants House Plant Care You will also need to water your plants often in order to encourage new root growth. How to root a plant cutting in water . Remove the rooted cutting from the water and give it a good rinse with fresh water. Put your cutting in a receptacle filled with water room temperature rainwater is the best but water straight from the tap will absolutely work. The rest is just a waiting and changing the water game. When you cut it back those cuttings will happily take root in water. Just dont wait too long before potting them up. How to Root Plant Cuttings in Water. Transfer cuttings from water to a terrestrial environment as soon as you see the first signs of roots. Place approximately one to two inche...