Jiska lettuce is a medium-maturing, semi-head, oily lettuce variety developed by the breeding company Rijk Zwaan. This variety is highly adaptable to different soils and climatic conditions, successfully grown both outdoors and under cover. Harvesting can begin as early as 50 days after transplanting, making it attractive for early and mid-season cultivation. The plant is resistant to major diseases, including downy mildew (Bremia lactucae), powdery mildew, and fusarium, as well as resistance to bolting, ensuring stable yields and product quality.
The Jiska lettuce rosette forms a full, attractive shape with a closed inner core, helping to preserve leaf freshness. Each rosette weighs approximately 500 grams. The leaves are medium-sized, dense, glossy, and wavy, light green in color. They have a pleasant flavor and aroma, making the lettuce versatile for fresh consumption, as well as for use in salad mixes and as a side dish.
The Jiska variety is suitable for outdoor cultivation from mid-April to late August, showing good resistance to brief spring frosts and moderate summer temperatures. Seeds are supplied in 500-gram packages and are intended for use under various growing conditions, making this variety a convenient and cost-effective choice for farmers and gardeners.
