Rhubarb

Question

I planted new rhubarb plants this past spring. Two of them have seemed to die back. One is leafy and ok. Are the first two going dormant or are they dead??

Answer 1

The leaves will generally die back naturally as you enter autumn or at a first frost.
Is the soil dry or excessively wet? You will want to provide water until dormancy with newly planted Rhubarb. Avoid watering down into the crown.

https://www.gardeningknowhow.com/edible/vegetables/rhubarb/protecting-rhubarb-in-winter.htm
https://www.gardeningknowhow.com/edible/vegetables/rhubarb/grow-rhubarb.htm