delirium florens
Tradescantia cultivar
Tradescantia is a genus of 85 species (currently orgnised in 5 subgenera), native to the Americas from southern Canada to northern Argentina. Tradescantia were introduced into Europe, and later in other parts of the world, as ornamental plants in the 17th century. Some species have escaped cultivation and have since become naturalized and even invasive in regions they have been introduced to.
Among the Tradescantia cultivars, those of tropical origin are often grown as house plants, but there is one group of hardier cultivars, known as the Andersoniana Group. Commonly sold as Tradescantia × andersoniana (which is, as happens with cultivar names, not a validated name), members of this group were hybridised from Tradescantia virginiana, T. ohiensis, and T. subaspera, which have overlapping ranges within North America. Given where this specific specimen grows and that is grows in a garden, it must belong to the Andersoniana Group. However, all three of the original species can produce blue to purple flowers, meaning there are multiple resulting cultivars with flowers in that colour range. However, given the grass-like nature of the plant and the spicific tint of the flowers, I think it might be Tradescantia x andersoniana "Zwanenburg Blue".
Tradescantia cultivar
Tradescantia is a genus of 85 species (currently orgnised in 5 subgenera), native to the Americas from southern Canada to northern Argentina. Tradescantia were introduced into Europe, and later in other parts of the world, as ornamental plants in the 17th century. Some species have escaped cultivation and have since become naturalized and even invasive in regions they have been introduced to.
Among the Tradescantia cultivars, those of tropical origin are often grown as house plants, but there is one group of hardier cultivars, known as the Andersoniana Group. Commonly sold as Tradescantia × andersoniana (which is, as happens with cultivar names, not a validated name), members of this group were hybridised from Tradescantia virginiana, T. ohiensis, and T. subaspera, which have overlapping ranges within North America. Given where this specific specimen grows and that is grows in a garden, it must belong to the Andersoniana Group. However, all three of the original species can produce blue to purple flowers, meaning there are multiple resulting cultivars with flowers in that colour range. However, given the grass-like nature of the plant and the spicific tint of the flowers, I think it might be Tradescantia x andersoniana "Zwanenburg Blue".