Where does salad come from

salad

Did you know?

Did you know? Botanically, the most important salads can be divided into four groups:
- Lattich Group (Lactuca Group): They contain only a few bitter substances. Typical representatives are lettuce, ice cream, batavia, romaine, cut and pick lettuce.
- Chicory group (Cichorium group): These salads contain more bitter substances, but in different amounts. The chicory group includes endives, chicory, leaf chicory and radicchio.
- Lamb's lettuce (Valerianella locusta)
- Arugula (Diplotaxis tenuifolia)

Several types of plants are hidden behind the term lettuce. All of them need an even and sufficient water supply and do not like wetness.

Lettuce is usually grown outdoors with or without a fleece or film cover, optionally also in a greenhouse or film tunnel. The expensive cultivation under glass, in which various growth factors can be optimally controlled, is rare.

While lettuce, lamb's lettuce and rocket are produced under protective covers and greenhouses that can be walked on, radicchio only grows in the field. In 2018, lamb's lettuce was grown under glass on 211 hectares and lettuce on 69 hectares. In the case of lamb's lettuce, this corresponds to around eight percent of the total area under lettuce.

In addition to cultivation in the ground, there is also the soilless culture of lettuce. The plants either grow in sterile rock wool and are supplied with liquid fertilizer during watering or in hydroponic systems in nutrient solution.

The young plants of the lettuce and lettuce are grown in the greenhouse and later planted outdoors. This increases the yield security compared to direct sowing. For a continuous supply to the market, salads must be planted in batches, which - depending on the type of salad and the time of year - is done weekly to daily. Planting is done from around the beginning of March in around 16 sets, so that harvesting can take place from the end of April to the end of October.