I germinate seed of perennials naturally in a cold frame in the garden. They then germinate when they are ready. Due to much travelling in May, I hadn’t got round to potting on any of the seedlings that had germinated outside… Luckily it has been very cool all of April and May, so that most of the seedlings were still in good condition. However, there were more seedlings than I had bargained on and I finally finished at 10:45 last night after 10 hours potting on some 160 species in the garden!