Start seeds indoors six weeks before last frost date.
Plant to the first set of true leaves to promote strong root growth.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Backa is a tender plant.The alternate name Kamennyi Tsvetok, was used by Ukrainian seed retailers.1
Dates back to the former Yugoslavia.
Kamennyi Tsvetok, Stone Flower, Bačka
1 http://tatianastomatobase.com/wiki/Kamennyi_Tsvetok