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I have finally managed to keep a couple of cowslips going in the garden. I have no idea why I find it so difficult. They live under an apple tree so have good sunlight when in flower and light shade afterwards. Last year, I left the seed pods on and got quite a few babies and this year, they are in flower.
Herewith one of the parents:
In my mini greenhouse, the baby tomatoes and peppers, are now out day and night although for the past few nights, they have been in fleece. However, with nights now due to be around the 9C minimum, I think I shall be able to remove the fleece and shut them in at night: