All members of this family respond to nutrients and water. They are gross feeders. If the plants have free draining, friable soil, with loads of nutrients and moisture, they’ll take off.  If you don’t have really good, rich, well-composted soil, then you’ll either have to dig in loads of manure or fertiliser.  An alternative could be weekly foliar spraying with fish (and phyter), which also helps to keep the powdery mildew away.
 
To grow quality pumpkins and melons and get heavy crops you must have a deeply worked (double dug or deep, free draining) soil. Plants in this family must have air, moisture and  nutrients available to the roots.  However, watering from the top once fruit begins setting will affect the quality of the pumpkins and melons. Pumpkins will not keep well. Given the right conditions this family will produce many more fruit.