It requires few lessons to develop an interest in gardening in young children. They usually like playing in dirt, digging and asking about things. If you allow them to pick fruit and vegetables in the garden to taste as they play outside, they usually connect the dots and don't grow up thinking that tomatoes and lettuces just appear on a supermarket shelf. They know because they've experienced gardening first hand or someone took the time to show them how plants grow.
Jamie is developing a real love of gardening. He's three and he's planted capsicum and chilli, he weeds, he scatters seed, digs and waters. When we are in the garden, he's there with us. He doesn't have to be asked. As soon as we head outside, he is with us, unconditionally, until we come back inside. It's the best kind of learning - learning by doing. That stays with you for life.