trim it down and leave it i think
In the UK, late autumn or early winter
Rhubarb is the whole plant. You eat the stalks of the plant.
To properly winterize your rhubarb plants, you should cut back the foliage, mulch around the base of the plant with straw or leaves, and protect the crown with a layer of compost or straw. This will help insulate the plant and prevent damage from freezing temperatures during the winter months.
The top growth will die off with the approach of winter. The plant will grow again in Spring
To force rhubarb to grow earlier in the season for an earlier harvest, cover the rhubarb plant with a dark container or forcing pot in late winter to block out light. This will encourage the plant to grow faster and produce an earlier harvest.
To force rhubarb to grow earlier than its natural season, you can cover the rhubarb plant with a dark container or a forcing pot in late winter. This will block out light and stimulate early growth. Make sure to check on the plant regularly and harvest the rhubarb when it reaches the desired size.
rhubarb is a plant that you can eat when it is cooked
To cut back rhubarb for winter, trim the stalks to ground level after the first frost. Remove any dead or damaged leaves. Apply a layer of mulch around the base of the plant to protect it from freezing temperatures. This will help the plant stay healthy and promote new growth in the spring.
The Stem
I don't think so because rhubarb is a type of plant and that's a noun.
Rhubarb
Rhubarb is a member of the same family as buckwheat, the Polygonaceae family.