Show them seed selections from the illustration on the seed packet. Once the selections have been made, purchase seeds or plants by the pot or Pak. Just place a pellet in a container of warm water, watch it expand in one or two minutes. Keep the garden simple and plant only a few types of flowers or vegetables the first year. Good flower suggestions for a garden are sweetpea, moss roses, morning glory, marigold, petunia, salvia, snapdragons, and zinnia.
Good vegetables are radishes, carrots, green beans, peas, zucchini, and other bite-ables.
It's important to place plants and flowers in the child's garden patch, not to merely assign a plant in the adult's garden to the child's care. If raising tomatoes in an adult garden, purchase or grow an extra tomato plant for the child's garden. Help assure success by keeping an eye on it. Remember to keep hands off if the experience is to be a good one. Be insistent that the youngster is responsible for the weeding, watering, and watching of the patch.