When we talk about bolting in lettuce, it has something to do with the lettuce not forming the way it should.
Lets grow purposefully upwards
Has it ever happened to you that you planted lettuce and it suddenly shot up instead of one to form a round head of lettuce? If so, then you or your lettuce has fallen victim to the so-called bolting. The lettuce grows upwards in order to form flowers there. The reasons are firstly the too warm temperatures and secondly not enough water.
Water regularly and plentifully
Since you usually cannot influence the temperatures, you have to be active in other ways. This means that you plant the lettuce in such a way that the heat cannot accumulate in the respective bed. The bed should also be well ventilated at night, because balmy summer nights can also play their part. In addition, regular and plentiful watering is announced, but not so much that the moisture builds up and the lettuce starts to rot.
Prevent
If you want to prevent from the beginning, then you should get bolt-resistant varieties from the dealer. This includes Fortunas and Nabucco for iceberg lettuce and Larissa, Karaganer Sommer 2 and Attractie for lettuce. Ask your specialist dealer, he can certainly help you with this topic.