losbladige

Losbladige is a horticultural term used in Dutch to describe a leaf form in which the leaves do not form a compact head but remain loose and independently attached along a stem or rosette. It is most commonly applied to lettuce (Lactuca sativa) and other leafy vegetables, where cultivars are bred to produce many edible leaves that can be harvested progressively. In contrast to kropsla, which forms a tight head, losbladige varieties produce loosely arranged leaves that can be harvested individually. The term literally means "loose-leaved" and is used in seed catalogs, grower guides, and consumer labeling.

Plants with losbladige leaves typically have a more open growth habit, with leaves that vary in size and shape by cultivar. Advantages for growers and consumers include a longer harvest window and the ability to pick leaves as needed, which can reduce waste. Disadvantages may include greater exposure of leaves to sun and weather, and potentially shorter shelf life after harvest if not cooled promptly. The term can also apply to ornamental or mixed-leaf types beyond lettuce, provided the leaf arrangement remains loose rather than forming a head.

Losbladige cultivars are widely available in home gardens and commercial production and are popular for fresh salads. The trait is a result of selective breeding and can be combined with other characteristics such as leaf texture, flavor, and bolt resistance.