Horrid Henry and the Perfect Plant is an episode in Season 2.
- Soggy Sid (mentioned)
- When Peter answers the door to Goody-Goody Gordon and Spotless Sam, Gordon's sweater is its usual yellow colour. When Gordon says "We've come to see your plant. How's it doing?" his sweater is red, the same colour as Peter's. When Peter shows the plant and Sam says "Oh, it's lovely!" Gordon's sweater is yellow again.