Oliver and the Cornstalk Green Acres : Season 5 Episode 12

With minimal help from Eb, a stressed Oliver begins planting his corn crop. Lisa tries to be a useful farm wife by making dreadful lemonade which Oliver pours out onto the ground. The next morning at that spot, he finds a giant cornstalk that reaches into the clouds. At the top of the stalk there's a Jolly Green Giant who bellows "Ho, Ho, Ho" and drops down creamed corn, both in the can and by the bucketful.