Wash the rhubarb stalks thoroughly, and dry.
Trim the top and bottom of the stalks, and chop into 1" (2.5 cm) pieces.
Arrange on a board or tray and put in freezer until frozen.
Remove from freezer, place in freezer bag, remove air and seal. Mark as "Rhubarb" and add the date. Place in freezer for up to 6 months.