Setting up a propagation bench in the GH

Scarlet just read the post where you said you have bought the heat mat, I wish you well with it, one thing I would recommend is using some fleece to protect your plants from the cold at night, your seeds and cuttings need to be kept moist but I have found that, as no doubt you know after taking cuttings from a dahlia and leaving it in a moist atmosphere can cause the plant to get mould