Torchflowers bloom during the night emitting light

Torchflowers should start blooming during the sunset and ending during the sunrise. Placing the Torchflowers underground without any sunlight will cause them to not emit light during the night and will most likely die from lack of sunlight (or any light at all). The Torchflower also only emits lots or little-to-no light depending on how much it got during the day or underground with light sources around.