Variety characteristics:

• W1443 Lü Luoma Green Romaine Lettuce (Lactuca sativa L., Cos Group) is an upright, semi-heading lettuce selected for smooth green foliage, crisp texture and a pleasantly mild, lightly sweet flavor. Plants develop broad, obovate leaves with mostly smooth margins and gradually form loose, elongated oval heads rather than dense iceberg-style heads.
The upright architecture keeps the central leaves neatly gathered while allowing good access for harvest. Tender leaves and crisp midribs make this selection suitable for salads, sandwiches, wraps and lightly cooked dishes. It may be harvested as individual young leaves, compact mini heads or mature semi-heading Romaine.
Under suitable conditions, spring crops may reach harvest approximately 35 days after transplanting, while fall crops may be ready approximately 20–25 days after transplanting. These are source maturity references rather than guaranteed harvest dates; temperature, transplant size, spacing and desired head size will affect actual timing.
This selection is best suited to spring and fall field production or season extension under protected structures. Although it is described as comparatively cold tolerant and fast growing, prolonged heat can reduce quality and promote bitterness or premature bolting.