In the bright, high-altitude clarity of Fort Collins, where sunlight is not merely present but defining, certain flowers seem less like inhabitants of the garden and more like reflections of the sky itself. Dorotheanthus—often known as the Livingstone daisy—belongs to that luminous category. If Dianthus refines and Cosmos drifts, Dorotheanthus radiates. It is a plant that opens fully only in sunl...