If your rhubarb is doing really well and you have a surplus on what you can use fresh, learn how to dehydrate it. They say you can use it in all the same ways you do fresh and provide a recipe for a meat sauce using it. Not just for pies anymore.
While you can also freeze or can your excess rhubarb, dehydrating takes up so much less room that it is a great way to store foods for long periods without taking up freezer or shelf space. Pantry Paratus shows us how to dehydrate the rhubarb and then gives 5 or 6 ways of using it later. There are recipes including meat sauce, meat glaze,sour candy and more.
https://pantryparatus.com/articles/rhubarb-harvest-dehydrate-it/