Thanks for the replys, really informative. I'm not started sowing outside yet, just sown five lots of seeds in the airing cupboard so far. I messed up on the begonias, I didn't use sand to thi the seeds out so did them again.

Reason I need to know is because I'm selling ther seed that I don't use one ebay.

On the instrcutions for Scabious it says "thin to 20cm (8") apart" and on the picture it says "25cm (10")
andother plant Zinnia Sprite mixed says "thin to 20cm (8") and the image says 25cm (10")