Watch their eyes light up with amazement when they look into the jar and see the seeds, burst open and growing. Starting seeds in the house can give them a head start in their garden. Before planting anything in the garden, explain how each plant needs enough space and water to grow, but don't get too technical, you will lose their interest. Help them with the seeding, making sure that they do not plant the seeds too deep. Also have them plant the seeds in-groups, for example, beans next to radishes next to carrots.
Children are impatient and can lose interest quickly.
Having starter plants, such as tomatoes is a good idea, so the child doesn't have to wait 7 to 10 days for a seed to germinate. A daily check on the garden is a must. You wouldn't want them to miss the thrill of seeing the first bean seed breaking through the ground. Weeds are a common problem, whether in your garden or a child's garden. Have weed-plucking contests, however, teach them to be careful when digging.