I have a healthy, fruit-producing 'Elan' strawberry plant that created six runner plants this year. It's now November and I want to overwinter all seven pots. I plan to put them in the cellar (we live in a flat in Bavaria, Germany). I have read online that I should wait until the temperature has dropped to around freezing for several nights in a row before I move them to the cellar. However, nowhere can I find out if the leaves should still be green or not.
It's now about 0°C outside, but my plant still has mostly green leaves and even some fruit buds, and I don't want to kill it by moving it to somewhere with no light.
So, my question is, when overwintering potted strawberries in a cellar/garage, is it OK to move them when the leaves are still mostly green?