This grower is fairly sure of this plant identification.
Spinacia oleracea ‘Perpetual spinach’ (Spinach). It is mid to pale green with fairly soft texture, medium vigour
Grow in deep enriched soil with good drainage. You should space the plants about 25cm apart. You can harvest the first leaves in about 8 weeks.
Italics = data drawn from parent genus or speciesView Full Plant Finder Record