Since gardenia is native to tropical areas it only thrives outdoors in Zones 7 (some varieties) or higher. In South Dakota, it is best to treat gardenias as a house plant. But they also do not transplant well, so you will want to cover it well for the winter, but there is no guarantee it will survive the elements in your zone.
Since gardenia is native to tropical areas it only thrives outdoors in Zones 7 (some varieties) or higher. In South Dakota, it is best to treat gardenias as a house plant. But they also do not transplant well, so you will want to cover it well for the winter, but there is no guarantee it will survive the elements in your zone.