This grower is fairly sure of this plant identification.
Acorus gramineus ‘Variegatus’ (Acorus). This is a semi-evergreen, aquatic perennial, marginal water plant. It has sword-like, tangerine scented, mid-green leaves, 8-35cm long, which are cream and yellow striped, and which are flushed rose-pink in spring.
Needs to be planted in full sun, well drained soil and is frost hardy.
Bog plant, foliage interest.
Italics = data drawn from parent genus or speciesView Full Plant Finder Record