The Great British Baking Show

PBS | 9:00 pm

"Botanical" sounds like it would be more a subtitle for a gardening show than a cooking competition, but it’s appropriate in the case of this new hour. Citrus flavors inform the bakers’ first creation, then the use of leaves plays into the technical round. Finally, edible sponges and floral designs — as applied to three-tier creations — are factors as Mary Berry and Paul Hollywood perform their judging of the results.