Lassie (1954)

S4E5 The Berry Pickers

While Jeff is at the dentist, Timmy and Gramps head out to gather huckleberries for the church supper pies. After their berry-picking adventure, Timmy becomes concerned when Gramps takes a nap, suspecting he might be unwell. However, the real trouble arises when Timmy accidentally eats some nightshade berries and ends up needing help.