When we visit people's offices to carry out our maintenance service, we have to water any external plants whatever the weather, and if we're delivering new plants we have to water them especially heavily. Whatever the weather, as we won't be back for a couple of weeks. It's worth remembering that it would have to rain very heavily for several days without break to give an outdoor container plant the water it needs for a fortnight.
All this is in way of explanation for anyone that - while we were having yesterday's torrential rain storm - might have seen me thoroughly watering two new spiral Buxus plants outside an office in Poole, or my colleague Claire standing on the roof of an office watering their terrace plants with a hose for an hour. You don't have to be mad to work at Stewarts Interior Landscaping, but it helps, as the old saying goes.
One more thing, if we're watering your indoor plants and it's raining outside, you're not the first person to think of suggesting that we should simply move our plants outside. We will, however, try and appear amused by the suggestion!