Posted: 02/12/2016 at 14:50
If it's not producing well give it a good mulch with well rotted farmyard manure (don't cover the crown but cover the area where the roots are for a circle about 3 ft in diameter). You don't need to dig it in - the worms will do that job for you.
In the summer make sure it has plenty of water - it's a thirsty plant.
Don't pull any stalks in 2017 - just keep it mulched and watered and leave it alone, removing any flower stalks that appear.
You'll have plenty of rhubarb in 2018.