This grower is fairly sure of this plant identification.
Italian arum, Large cuckoo pint, Lords and ladies
Arum italicum (Italian arum). This is an Italian Arum which is grown for its foliage and bright red berry clusters that will appear after the flowering in late summer. The foliage is very glossy and bright green in colour.
Watch out it is poisonous.
Ground cover, ornamental, naturaliser.
Italics = data drawn from parent genus or speciesView Full Plant Finder Record