Vegetables like large squash, melons, corn, potatoes, large tomato varieties and big bushes of lettuce grow larger than others vegetables. Proper vegetable care, including preparing high-quality soil, proper watering and regular fertilizing, also ensures that any vegetable varieties produce many veggies and relatively large-sized veggies.
Choose a sunny garden space. The National Gardening Association says that most vegetables need at least six to eight hours of direct sunlight per day, although spinach and lettuce can tolerate less light. Ensuring that a garden space gets enough sun results in large healthy vegetables.
Weed the area before planting vegetables and continue weeding the garden after planting. North Carolina State University explains that weed roots may interfere with vegetable roots. The damage resulting from this interference harms vegetable growth and may result in smaller output.