Timing is everything, people! Well, at least when it comes to watering your snap beans. It’s very very important that beans receive a steady inflow of moisture:
1) Directly after they are planted, and
2) All throughout their production phase, particularly at the peak.
Beans are fairly easy to grow, and they do not require much (if any!) fertilizer. Keep an eye out for pests like the Mexican Bean Beetle, and your beans should be looking good and ready to harvest in no time!