Jouan Rius / Rhubarb (Rheum rhabarbarum) growing in vegetable garden, France, August.

Ernie Janes / Indian Rhubarb (Darmera peltata) flowers in garden. England, UK.

Ernie Janes / Indian Rhubarb (Darmera peltata) flowers in garden. England, UK.

Ernie Janes / Rhubarb forcing pots in garden, England, UK, July.

Ernie Janes / Forced Rhubarb (Rheum rhaponticum) growing in garden, Norfolk, UK, March

Gary K. Smith / Rhubarb patch with terracotta forcer, in country garden, Norfolk, July

Nigel Cattlin / Mature rhubarb (Rheum rhaponticum) plant with young red stems before harvest, Devon, England, UK, April

Nick Upton / Black garden ant (Lasius niger) feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.