Cucumis melo.  

This type of Asian melon, or conomon, has been grown in China and Japan for thousands of years but has only recently appeared in American markets. 

Golden-yellow softball-sized fruits. 

Flesh is fun to eat, very sweet and crisp. 

Can be trellised. 85-95 days.

Grow in full sun.  Grows best in heat.  Seeds germinate in 4-10 days.  Can be started indoors 2-3 weeks before last frost.