An object to color and build, to carry out, as a family, a scientific experiment that shows the amazing powers of water and light on plants. Assemble the greenhouse according to the assembly plan (after having decorated it if you wish). Soak the seeds in a saucer for about 15 minutes before you spread the seeds, which have become viscous, on the hemp carpet. Place the hemp mat on the base of the greenhouse and turn on the light. During the day, place the greenhouse near the window to recharge the battery. In the evening, switch on the greenhouse to prolong the beneficial effects of blue light on germ growth. Once a day, take the hemp mat out of the greenhouse and spray a little water on the seeds (not too much so as not to get the whole hemp mat wet). Then put it back on the base of the greenhouse. After a few days, the seeds start to germinate. Once the shoots are 6 cm high (approx), cut them off to taste.!