ARE THESE ANNUALS?
Certified GKH Gardening Expert
This depends on where you are located. In warmer climates that don't experience frost, they will be perennial. In cooler climates, depending on how cold it gets, they will either be annuals or biennials.
This article will give you more information on their care: https://www.gardeningknowhow.com/ornamental/flowers/lisianthus/growing-lisianthus-flowers.htm