The lettuce you buy in the market is cut off. You can find the lettuce with thick roots.
After buying it home, don't break it by hand, clean the knife, and cut off the leaves two centimeters from the root for eating.
Find a cup or something to decorate the water. Put it in.
A new lettuce will soon grow. As long as the root doesn't rot, you can only harvest leaves each time.
Of course, this is because the dredged tissue in the root has not been damaged, and it can continue to transport nutrients upward. As long as the sun and water are sufficient, there is no problem to grow leaves.
In addition, there is meristem in the shoot tip of lettuce, which is located in the middle of the cabbage heart. As long as the center is not damaged, it will differentiate and grow new leaves under suitable external conditions. Just like leek, it can grow one after another, that's why.
A flower friend sun out the root of lettuce in his home. The whole plant is 80cm long, of which the leaves account for 10cm and the root is 70cm. Strong lettuce root. Pull down all the time
