Count Duckula (1988)

S1E25 Duck and the Broccoli Stalk

Von Goosewing schemes to utilize a growth serum to cultivate an enormous clove of garlic near the castle, intending to eliminate Duckula. However, he accidentally spills some on Duckula's broccoli, causing it to grow uncontrollably. This unexpected growth lifts Castle Duckula and its residents into the sky, landing them in a cloud castle ruled by a giant.