Iceberg Lettuce

About

Iceberg lettuce is an annual vegetable known for its crisp, pale green leaves forming dense, cabbage-like heads. Each head typically measures 15-23 cm (6-9 inches) in diameter. Introduced in 1894, it remains popular for its mild flavor and crunchy texture. While not as nutrient-dense as darker leafy greens, it provides hydration and a satisfying crunch to salads and sandwiches. Iceberg lettuce thrives in cooler temperatures and may bolt or fail to form tight heads in warmer climates. 🌞💧 Sun and Water Requirements: Prefers full sun exposure but can tolerate partial shade, especially in warmer regions. Requires consistent moisture; soil should be kept evenly moist but not waterlogged. Mulching helps retain soil moisture and maintain cooler soil temperatures. ✂️🫘 Methods to Propagate: Primarily grown from seeds. Sow seeds directly into the garden 1/8 inch deep as soon as the soil can be worked in early spring or late summer for a fall crop. Thin seedlings to 30 cm (12 inches) apart to allow room for head development. 🧑‍🌾👩‍🌾 When to Harvest: Harvest when heads are firm and reach full size, typically 70-80 days after planting. Cut the head at the base with a sharp knife. For best flavor and texture, harvest in the morning before the day warms up.

Permaculture Functions

• **Edible**: Provides a crunchy texture and mild flavor, ideal for salads, sandwiches, and garnishes.
• **Ground Cover**: Dense heads and tight spacing shade soil, slowing weeds and reducing splash on neighboring crops.
• **Biomass**: Trimmings, thinnings, and post-harvest residue feed compost or worm bins, closing the loop in intensive vegetable beds.

Practitioner Notes

• Heads split after heavy rain plus heat—harvest early rather than chase perfect size.
• Cool soil germinates; soil over 80°F (27°C) gives patchy emergence without shade cloth.
• Outer wrapper leaves protect heart—strip damaged outers, sell or eat the crisp center.

Companion Planting

Pest Pressure