The Subtropical Greenhouse, with its Mediterranean climate, features Brunfelsia pauciflora, accurately named the "Yesterday, today and tomorrow plant" for the transformation of its deep purple flowers to lavender and finally white as they age.

This fragrant shrub is a moderate grower but can reach a fairly large size in a non-greenhouse environment. In USDA Zones 9–11, it will reach 3 to 8 feet tall, with a spread of 4 to 6 feet. When grown indoors, it can be pruned to a modest size as a specimen plant. Yesterday, today and tomorrow plant is known to contain poisonous alkaloids. The berries are especially toxic.