Japanese Knotweed Shoots

Reynoutria japonica

Illustration: Japanese knotweed (Reynoutria japonica) young shoots

Identification: Bamboo-like jointed hollow stems with papery sheaths at the nodes; young spring shoots are asparagus-like with red speckles; heart-shaped leaves on mature plants.

Dangerous look-alikes: No toxic look-alike at the young shoot stage with jointed hollow stems. Mature stands are unmistakable.

Edible parts: Young shoots under ~12 inches.

Season and habitat: Early spring. Riverbanks, roadsides, waste ground — invasively abundant.

Preparation: Tart rhubarb-like flavor — peel, chop, and use like rhubarb in pies, jams, sauces. Contains resveratrol (the red-wine compound). Harvesting helps control it; never compost the crowns.