To regrow romaine lettuce, you will need the stalk of the lettuce. You should separate it from the remaining leaves with a straight cut. The stalk of the lettuce should still be about 5 cm high, because if it is cut shorter, this makes it more difficult to resprout.

The lettuce stalk also goes into a container with water, so that about half of the stalk is immersed in water. Find a bright place for your lettuce by the window and change the water at least every 2 days. After about a week, fine roots can be seen on the stalk.

Once you can see the roots, it's time to plant the lettuce in the ground.
Here it is important that the regrowing leaves are above the ground.

Soon you will be able to harvest the small leaves that grow out of the stalk.

Place the shoot in a small bottle/vase with moderately cold water. The lower end of your shoot should always be in the water and the water should be changed regularly. It usually takes a while until the first roots appear. It may be helpful to remove some of the upper leaves to speed up rooting.

Observe your cutting. When roots form, it should be planted in soil. Again, growing or herbal soil is recommended. You can remove withered leaves. If the cutting is well supplied with water, a new plant can grow soon.

Some plants can reproduce on their own. This type of propagation without the formation of a seed is called "vegetative" reproduction. Genetically, this means that the new plant is a clone of the parent plant, i.e. it carries exactly the same genetic material. A very well-known crop that is almost exclusively vegetatively propagated is the potato. When potatoes are grown, tubers are planted in the soil and a new potato plant develops from these tubers.

In the garden center you can find bags of seeds for growing various vegetables. From these seeds, with good care, a new plant grows, because the seeds contain all the genetic information of a plant that it needs to form roots, leaves, shoots, flowers and fruits. In the case of reproduction by seed, the genetic information is a mixture of the genetic information of a mother plant and a father plant. In contrast to vegetative reproduction, this is called "generative" or sexual reproduction. The advantage of this generative reproduction method is that it provides more diversity than vegetative reproduction by mixing genes.