Most of the weight comes from plain old water, so keep a constant supply available at all times. Add nitrogen to make more leaves, as they produce sugars to make larger fruit. Occasionally turn the fruit, being very careful not to break the stem. Planting squash and other vine crops is simple because the seeds are large and easy to handle. Sow seeds in groups or hills, and space them at the proper distance.
Moisture is vital to make vine crops grow.
Work plenty of organic matter into the soil to improve water retention. Soil fertility is also important. To increase the sweetness of your melons, hold off watering just before harvesting to give the melons time to develop more flavor. If your vine crops fail to bear fruit, you may have to play the role of an insect. Note that vine crops have both male and female flowers on the same plant.