perhaps your thinking of the cbbc cartoon (name escapes me) which he does a voiceover for a gnome

had similiar issues with garden school, i stupidly had hopes it would go into detail on the how's and the why's of gardening. for example the clearing of the small domestic garden and double digging didn't have enough explanation. i know the reasons myself, but for people wanting to learn its not giving any insights, and is more focused on spending a day on a beach throwing wallpaper across the sand. i found it unintentionally halirous and pretenious in equal measure