This is part of the natural flowering cycle of these plants, just like annuals and perennials grown outdoors. Not sure ...

Deadheading promotes healthier plants and extended blooming, improving the garden's appearance. Knowing when and how to deadhead specific flowers can lead to more vibrant blooms. Common deadheading ...

The majority of flowers bloom and set seed, a natural climax to the growth cycle. Deadheading flowers as they fade not only tidies up the plant, but it interrupts this sequence and stimulates new ...