Posted: 07/04/2015 at 14:18
I don't like sowing mixes in pots/trays. If you leave them too long the quicknd easy swamp the slower ones and if you get on with the pricking out there's a danger of dislodging something that's on the point of germination.
But thinking about it more deeply that sentence could be shortened to 'I don't like mixes'.
Some things do well in pots, some things don't. Some things come up in a week, some take all winter. With individual species you can choose how you sow.