Cultivation

Container-grown lettuce

Lactuca sativa L.

Growing lettuce in a limited volume of substrate, requiring the selection of containers according to the variety type and careful moisture control due to the shallow root system.

In the reference 51 varieties crop Lettuce, where this is mentioned in the description.

The container volume for lettuce is selected based on varietal characteristics: leaf varieties require approximately 400 cm³ per plant with a depth of at least 25 cm, while heading varieties require at least 900 cm³ with a depth of 35 cm or more. Due to the shallow root system, the substrate must have high water-holding capacity, although it is critically important to avoid waterlogging, which causes root and lower leaf rot.

Typical substrate mixes for container-grown lettuce include peat, compost, and sand, with the addition of ash and mineral fertilizers. The use of composts based on organic waste contributes to increased productivity and antioxidant activity in plants, but requires strict control of pH levels to prevent the accumulation of heavy metals.

The short vegetation cycle of lettuce (30–35 days) makes the crop suitable for intensive conveyor-style cultivation in compact containers. Unlike crops with taproot systems, lettuce does not require deep containers, which allows for its successful use in indoor or windowsill vegetable gardening.

General information about the subject — on the page Container culture.

Sources8

Varieties of Lettuce mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.