I am going away for two weeks next week and the forecast is sunny and little rain. It was the same last year and I asked my bil to water my pots but he didn’t do it so I came back to loads of wilted strawberries and some sorry looking hydrangeas. This year I need a back up plan. I have seen you tube vids of plastic bottles with holes poked in the lids upturned into the pots. Apparently this provides slow release water as the sun heats the air in the bottle. Is this effective. Has anyone done this with any success.