We look after each other's plants during holiday at our floor. One of the neighbours did a little inspection round to check what had to be done exactly and 'suggested' we even have stinging nettles in our balcony garden... we have 'm for butterfly support, ma'am. The neighbours are away now, but since since Dutch public news now shared the following as a news item, we today offered to replace her hydrangea with nettles :) (title: What you can do for more butterflies: Hydrangea out, nettles in): https://nos.nl/artikel/2532039-wat-je-kunt-doen-voor-meer-vlinders-hortensia-s-eruit-brandnetels-erin