You’re going on vacation this winter and have no one to water your houseplants? That’s easy enough to fix!
Place a rag, a towel, a piece of old carpet or even just 4-7 sheets of newspaper on the bottom of a sink or a bathtub. These products will act as capillary matting. Do not plug the drain: you’ll want any surplus water to flow out. Now, moisten the matting and place your pots directly on it, that is, without any saucer. Next, turn on the tap just a bit, so that it drips very slowly. As plants start to dry out, moisture will move up into the pot by capillary action, keeping the pot evenly moist… and any excess water will simply go down the drain.
Ideally, the sink or would be in a brightly lit spot so that your plants will get good light while you’re gone. That way they’ll be in perfect shape when you get back. If that isn’t the case, you might want to leave a light on or add some sort of supplementary lighting, especially if you’ll be gone more than 2 or 3 weeks.
No Frozen Pipes
A secondary advantage of this tip that letting the tap drip while you are away will prevent your home’s pipes from freezing (unfortunately, a common problem when people from cold climates travel during the winter months and therefore no water circulates inside the house). In fact, plumbing experts already recommend that you let a tap drip while you are away during freezing weather. The only difference here is that the drips will now also benefit your plants.
Not for Succulents
Note that the above advice applies to plants that like their soil to be relatively moist at all times, like most foliage and flowering plants. Capillary matting, however, creates too moist a medium for most succulents and cacti. For these plants, you simply need to water well before you leave. Most can tolerate up to 2 or 3 months without watering if necessary.
This technique doesn’t work for you? Here is another suggestion on how to water your houseplants while you are absent.