Veggie punnets, small containers used for starting seedlings, are ideal for growing a variety of vegetables like tomatoes, lettuce, and herbs. These compact trays allow for controlled germination and early growth, making them perfect for space-saving urban gardens or starting seeds indoors. The best time to plant in veggie punnets is late winter or early spring, allowing seedlings to strengthen before transplanting outdoors after the last frost. This method not only ensures a head start for the growing season but also provides flexibility and ease in managing young plants.