Like humans and animals, plants need both water and nutrients (food) to survive. Most all plants use water to carry moisture and nutrients back and forth between the roots and leaves. Water, as well as nutrients, is normally taken up through the roots from the soil.
So, for example, a 3-month old puppy should be able to hold its urine for approximately 4 hours in a pinch. This means that if you have a properly toilet trained 4-month-old puppy that, theoretically, can hold its urine for 5 hours, and you shut that puppy in a crate for 6 or 7 hours, you are courting disaster.
1 The crate should be large enough so your pup can sleep, stand upright and turn around. 2  Go by your puppy's age in months to determine how long he can hold his bladder -- a 2-month-old puppy can hold his bladder for two hours.tep 1. Walk your puppy about one hour before leaving him alone. Take him outside so he can go potty and play a game of fetch so he can run and have fun. A good exercise session can help keep him calm while you're away.