So I water my plants, go out, do a little shopping, capture some small animals, the usual. When I get back home I notice I've missed a couple spots to water. Then...another patch turns unwatered. Right in front of me. Patches of tilled soil just flipped from being irrigated to dry. It was at about 5 PM and I watered my plants first thing in the morning. It wasn't raining.
Where did the water go? Are my plants still "watered" for that day or what? Is this something I need to know about or am I cool if I just water each square once a day?