–If possible, move pots to a shade location while you are away. This can help to minimize soil drying out too quickly.
–Water deeply for several days before leaving to ensure that soil is thoroughly moist and that there are no pockets of dry soil.
–Add a few extra inches of fresh mulch such as finely shredded bark to help keep soil moist.
–Experiment before leaving with old-school hacks such as homemade watering funnels constructed from empty liter soda bottles. They might look weird, but they can be helpful.
–While larger containers of these plants will likely weather your absence, smaller pots and hanging baskets typically do not hold enough soil to get and stay thoroughly moist. Here, consider investing in an inexpensive drip system on a timer.
–Finally, nothing is guaranteed. A blistering heat spell or bout of hot, dry wind can take out even those plants that are extra hardy. If you’re really concerned, there’s probably a neighbor kid you can train to water!