I have about 50 seedtrays of flower seedlings, ( Livingstone Daisy, Dahlia,Antirrhinum, Coleus, Pansy, Sweet william, Petunia, Aubrieta I also have about 50 seed trays that are germinating very well but not ready. These have been kept in my south facing dining room.
I want to harden the seedlings that are ready in plastic greenhouse(it is south facing against a brick wall and well tied down ). but unsure if it is too cold to leave them in there at night.
I had them in there all day yesterday and brought them in at 6pm overnight...wondering when i can leave them all day and night in plastic greenhouse. ill try add some photos. This time last year I had 2 plastic greenhouses full of seedlings and it was alot warmer at night, its been so cold. I live in Northern Ireland.
Ive uploaded some photos hope they work . many thanks