Vegetables are some of the easiest plants to grow from seed, so they are a great choice for gardening with children. Additionally, there's no need to have a huge plot of land or build any special containers to start and cultivate a lively food garden. Many vegetables grow well in big pots placed in a sunny location. Growing vegetables with kids is easy, instructive and delicious.
Locate a bright, open spot in your yard to set up the vegetable garden. Choose a location that gets plenty of sun (at least six hours each day). Talk to the child and decide how many containers of each vegetable--tomatoes, green beans, carrots and radishes--you want to grow.
Make sure your pots are the right size. Discuss the best kinds of pots to use with the child. Plastic, ceramic and terra cotta pots work well. The carrots and radishes will need deep pots--at least 12 inches--because their vegetables grow underground. The green bean and tomatoes plants will need larger containers between 12 and 16 inches in circumference. Make sure each pot has good drainage.
Have the child fill the pots to the brim with gardening soil. You will not need to add additional fertilizer to high-quality potting soil. If you choose, you can add fertilizer as the plants sprout, grow and mature.
Let the child use a watering can to soak the soil in each pot. You will be sowing the seed directly into the dirt and will be able to more easily plant the seed in moist soil. Make sure the final frost has passed before planting your seeds or young plants in outside containers.
Plant the radish and carrot seeds about 3 to 4 inches apart from each other in their respective containers. Water daily until they begin to germinate, which should happen in just four to five days. As the plants grow, thin them out a bit so that each healthy plant has about 3 inches between itself and its neighbor. Water throughout the season and harvest when a slight tug reveals a fully grown carrot or radish (3 to 6 weeks).
Show the child how to use the spade transplant the tomato plant and green bean bush into their containers. Set up the tomato staking system over the small plant because it will grow rapidly and need the support soon enough. The green bean plant will not need additional support. Water daily. The vegetables should be ready to pick from the plants within 4 to 6 weeks.