To grow a seed, start by choosing a suitable container, such as a pot or seed tray, and fill it with potting soil. Make a small hole in the soil, about twice the depth of the seed, and place the seed inside. Cover it gently with soil and water lightly to keep the soil moist but not soggy. Next, place the container in a warm, sunny spot, as most seeds need light and warmth to germinate. Keep the soil consistently moist and watch for sprouts. Once the seedlings grow a few inches tall, you can transplant them into a larger pot or your garden.