Anne Middleton/Harold Walker wrote:
I would like to see other responses to this one........over here(USA)
soil in a germination mixture is frowned upon......unless it is
sterilized before using.........HW.

Here too, apart from risk of disease it's an unknown nutrition-wise.

I invest in a small bag of quality seed compost, gp compost goes mossy
in my greenhouse. And sow thinly.