The optimal period for relocating established rhubarb is during its dormant phase. This occurs either in early spring, before new growth emerges, or in late fall, after the first frost has killed back the foliage. Selecting this dormant window minimizes stress on the plant, encouraging successful establishment in its new location.
Successful relocation during dormancy offers several advantages. The plant directs its energy towards root development rather than foliage production, leading to more robust growth in the subsequent season. Historically, gardeners have utilized this dormant transplanting method to divide and propagate rhubarb, ensuring a continuous supply of this valuable perennial vegetable.