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Lactuca sativa var. capitata 'Iceberg'

Iceberg lettuce

Common names: Iceberg salad, Crack lettuce

Iceberg lettuce

This description was machine-translated.

Description

The Iceberg lettuce forms a firm, spherical head of crisp, pale green leaves and epitomizes freshness and bite. It is heat‑tolerant and stores longer than loose‑leaf lettuce, retaining its characteristic crunch in the refrigerator for days.

Care instructions

Plant seedlings in nutrient‑rich soil and water generously and evenly, Iceberg lettuce requires ample moisture for firm heads, especially during head formation. Keep sufficient spacing so heads can fully develop, and harvest when they feel firm before they bolt. A mulch layer keeps the soil cool and moist.

Soil & site

Soil pH

4.0pH 6–78.0

Soil type

loamy, humus-rich, well-drained, nutrient-rich

LightFull sun
Hours of sunat least 4 h a day
HardinessFrost-sensitive
Crop rotationComposites
Water needHigh

Feeding

Medium feeder

Months

Mar, Apr, May, Aug, Sep

Propagation

Methods

  • From seed

Companion planting

Good neighbors

carrot family (Apiaceae)

Calendula and Tagetes next to carrots keep the carrot fly away with their scent.

For example Carrot fennelCorianderCelery (Stalk Celery)CarawayFennelparsley root and 15 more species in the catalogue

Source: classic companion planting (DACH-Gartenpraxis)

Rather not

nightshade family (Solanaceae)

Sunflowers release substances into the soil that inhibit potato tuber growth, and they also compete for water and nutrients.

For example PotatoTomatoSweet pepperCocktail tomatoEggplantCape gooseberry and 9 more species in the catalogue

Source: basic crop-rotation rule

Companion planting is partly traditional gardening lore. Where the reason is known, it is given.

Some of these explanations were machine-translated.

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