There are always lots of details to take care of around the house when you're preparing for a vacation. Your list might include tasks such as reprogramming the thermostat and holding the mail, but what about your garden? Your plants in the ground will usually be fine for a week or so without watering, especially if there's some rain in the forecast. But because containers have limited space for holding water and are more exposed to warm temperatures, they tend to dry out much faster.