Lettuce Iceberg Summer Seed

Lettuce Iceberg Summer forms medium, flat-round heads for crisp salads and warmer-season South African kitchen harvests.

View the South Africa-specific grow guide: Lettuce Grow Guide for South Africa

Quick Grow Facts

• Plant Type: Cool-season leafy vegetable annual selected for warmer-season iceberg production.
• Scientific Name: Lactuca sativa
• General Sowing Time: Spring to early autumn in mild areas; use cooler windows, morning sun and careful watering in hot inland gardens.
• Position: Full sun in mild weather; morning sun with light afternoon shade in summer heat.
• Sow Depth: 5–10 mm
• Spacing: 25-30 cm apart so heads have room to form.
• Germination: Best in cool, evenly moist conditions; heat above about 27 °C can inhibit emergence
• Height: Around 20-30 cm.

Why Grow This Variety

• The medium-sized iceberg type forms a neat, flat-round head.
• The source copy identifies this as a summer-suitable option.
• Pelleted seed supports more accurate sowing and thinning.
• It offers gardeners a warmer-season iceberg option.

Garden Uses

Plant Iceberg Summer in a moisture-retentive bed or large container where watering is easy, then use the crisp heads in salads, wraps and sandwiches.

Growing Notes

• Sow shallowly, about 5–10 mm, following the packet directions for raw or pelleted seed.
• Keep the seedbed cool and evenly moist; high soil temperatures can delay or reduce germination.
• Use full sun in cool weather and light afternoon shade as temperatures rise.
• ‘Summer’ identifies the warmer-season cultivar option; it is not heat-proof, so use the coolest practical sowing window and do not allow seedlings to dry out.
• Harvest loose leaves as needed or cut the head before heat triggers bolting.

Brought to you by Ubuntuberg Seeds, where our mission is to cultivate humanity & harvest unity. Ubuntuberg Seeds: the highest quality seed stock in all of Southern Africa, sourced from sustainable farms, guaranteeing you the best quality seed stock.