Lettuce Supreme Plus Iceberg


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Transplanting ‘Supreme Plus Iceberg’ lettuce, a type of Iceberg lettuce known for its crisp texture and robust leaves, can be successfully done using soil-based, hydroponic, and aquaponic methods in a greenhouse setting. The approach for each method needs to be tailored to the specific requirements of Iceberg lettuce, which typically includes maintaining cooler temperatures and ensuring adequate water supply. Here’s how to manage each method:

1. Soil-Based Transplanting in Greenhouses

Seedling Preparation


  • Prepare beds or containers with well-draining, fertile soil, enriched with organic compost.
  • Space the seedlings approximately 20-30 cm apart.
  • Water immediately after transplanting to help establish the plants.

Greenhouse Management

  • Maintain a cool, stable environment, as Iceberg lettuce prefers cooler temperatures.
  • Use shading to protect the plants from strong direct sunlight.

Pest and Disease Control

  • Implement organic pest control methods and practice crop rotation to prevent soil-borne diseases.

2. Hydroponic Transplanting in Greenhouses

System Setup

  • Install a suitable hydroponic system like NFT (Nutrient Film Technique), DWC (Deep Water Culture), or Ebb and Flow.
  • Ensure proper circulation and aeration of the nutrient solution.


  • Move seedlings from starter cubes to the hydroponic system.
  • Monitor root health and adjust placement for optimal growth.

Nutrient and pH Management

  • Use a balanced hydroponic nutrient solution, maintaining pH between 5.5 and 6.5.
  • Consistently test and adjust nutrient concentration and pH levels.

Environmental Control

  • Regulate temperature and humidity within the greenhouse to create an optimal growing environment.
  • Supplement with artificial lighting if natural light is inadequate.

3. Aquaponic Transplanting in Greenhouses

System Setup

  • Establish an aquaponic system integrating fish culture with plant production.
  • Balance the system for the needs of both fish and plants.


  • Start seedlings in a medium compatible with aquaponics.
  • Transplant into the aquaponic grow beds, ensuring good water flow from the fish tank.

Nutrient Balance

  • Monitor nutrient levels, as fish waste provides nutrients for the plants.
  • Maintain water quality for both fish and plant health.

Temperature and Light Management

  • Control the greenhouse temperature to support both fish and plant health.
  • Use artificial lighting to supplement natural sunlight if required.

General Considerations for Greenhouse Growing

  1. Adaptation to Local Climate: Customize the growing approach to suit the specific regional climate of South Africa.
  2. Water Efficiency: Implement water-saving practices, especially important in regions with limited water availability.
  3. Pest and Disease Management: Use appropriate control strategies for each cultivation method.
  4. Regular Monitoring: Continuously adjust and monitor conditions within the greenhouse for optimal plant growth.

By adapting these methods to the specific environmental conditions in South Africa, you can effectively cultivate ‘Supreme Plus Iceberg’ lettuce in a controlled greenhouse environment. Be prepared to make specific adjustments based on local climate and environmental factors.


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