1. The spacing between outdoor watermelon plants depends on the variety and cultivation objectives, typically ranging from 1.5 to 2 meters.2. Maintaining an appropriate spacing is crucial for the growth of watermelon plants.3. planting too closely can lead to competition for light, water, and nutrients among the plants, negatively affecting their growth and development.4. Sufficient airflow is facilitated by proper spacing, which also reduces the risk of diseases and pests.5. Adequate spacing also allows for easier agricultural operations, such as weeding, fertilization, and irrigation.6. The specific spacing should consider the characteristics of the watermelon variety; larger varieties require more space, while smaller ones can be planted denser.7. If high yield is the goal, it may be necessary to increase the spacing slightly to ensure that each plant has access to ample resources.8. For example, when aiming for high yields with large watermelon varieties, plant spacing can be set to around 2 meters.9. Such spacing is conducive to plant growth and facilitates agricultural operations.10. In summary, the spacing of outdoor watermelon plants should be determined based on the variety's traits and cultivation goals.11. Proper spacing promotes watermelon growth, increases yield and quality, and reduces the occurrence of diseases and pests.12. Therefore, when planting outdoor watermelons, careful consideration should be given to setting an appropriate spacing.