Iceberg Lettuce Seeds for Home Gardening

Iceberg lettuce is the classic crisphead type, instantly recognised by its compact, firm head of pale, tightly wrapped leaves. What sets it apart is the texture: a clean snap and a cool, watery crunch with a gentle, mild flavour that never turns bitter when grown in the cool season. It is the go-to lettuce for crisp salads, fresh wraps, burgers and sandwiches, where its sturdy leaves hold their shape and refreshing crispness. Easy to grow at home in garden beds or roomy containers, it rewards cool-weather timing with a dense, satisfying head.

Planting

Lettuce is a cool-season crop that should be timed to mature before hot weather, since it does not tolerate heat well. In Egypt the mild winter months are the natural season: across the Nile Delta the main sowing window runs roughly from late September through February, with successive sowings every two to three weeks for a continuous harvest, while the December to January core gives the most reliable hearting because temperatures sit near the ideal cool range. In hotter Upper Egypt, shift the window slightly later and shorter, roughly November through January. Sow shallowly, only about 1 cm deep, and cover the seed only lightly, because lettuce seed needs light to germinate. Seeds germinate best at about 13 to 18°C and sprout poorly above roughly 24 to 27°C, when high temperatures cause thermal dormancy. Avoid sowing from May to September, when summer soil routinely exceeds 27°C. As a crisphead type, space plants about 30 to 38 cm apart in the row, with rows roughly 45 to 75 cm apart. You can also start head lettuce indoors three to four weeks before planting out, then harden the seedlings off by reducing water and temperature for two to three days before transplanting.

Fertilizing

Lettuce has a medium to high nutrient demand, so work plenty of compost or organic matter into the soil before planting. A complete balanced fertiliser such as 10-10-10 NPK can be applied before planting at about 1 kg per 9.3 m², then side-dress with nitrogen once the plants reach about 10 cm tall, at roughly 0.45 kg per 7.6 m of row. Lettuce grown in fertile ground generally needs no extra feeding, while lettuce in containers benefits from a general-purpose liquid feed every two weeks during the warmer part of the season.

Care

Keep the soil consistently moist to promote rapid growth and help prevent bolting; about 2.5 cm of water per week is adequate, and a little more on sandy soils. Use frequent, light watering and water overhead in the morning, but avoid overwatering, which encourages root and leaf disease; containers may need daily watering in warm weather. Lettuce grows well in full sun during the cooler months but tolerates partial shade of four to six hours of direct light a day, and light shade during the hottest part of the day helps prevent bolting in the warm shoulder months. Thin seedlings while they are still small to the final spacing, clipping unwanted seedlings with shears rather than pulling them. Watch for common pests such as aphids, cutworms, slugs and snails, flea beetles and leafhoppers, and diseases including downy mildew, grey mould and lettuce mosaic virus; floating row covers help keep pests out, and avoiding overhead watering late in the day reduces disease. Harvest a crisphead once it forms a compact, firm head, picking in cool weather and earlier rather than later, since heat and over-maturity make the leaves bitter and prompt bolting.