Before heading away for a break, potted plants deserve more than a quick, hurried sprinkle of water on the way out of the door. A proper, thorough soak gives them a far better chance of coping well while nobody is around to check on them regularly.
Soaking properly, not just splashing water
Water each pot slowly and steadily, pausing partway through so the compost has time to absorb the moisture rather than watching it run straight through and out of the bottom. A rushed watering often leaves the centre of the compost still dry underneath.
Check that water is genuinely reaching the roots by feeling the compost a little below the surface afterwards, rather than assuming the job is done once water appears in the saucer beneath the pot. Surface moisture alone does not tell the full story.
Move particularly thirsty plants to a slightly shadier spot for the duration of the trip, since less direct sun means less water lost to evaporation while nobody is there to top them up. Even a partial move can make a real difference over several days.
Group pots closely together rather than leaving them spread out individually, since plants standing close together help shade each other's compost and slow down how quickly everything dries out. This small adjustment is easy to overlook but genuinely effective.
If the trip runs longer than a week or so, it is still worth asking a neighbour to check in once or twice, rather than relying on a single soak to cover the whole period. Even a brief top-up partway through can make all the difference for the thirstiest pots.
Give the final soak the evening before leaving rather than first thing on the day itself, so the compost is properly saturated with time to settle before the journey begins. Plants prepared this way generally cope far better until someone returns to water them again.