I sprouted mine first; soaked them in daily changed water for a few days, put them in moist seeding compost will they were an inch or two high, then planted them out.
Lovely peas, fantastic flavour, quite prolific (even when hidden by the weeds!) just wish I planted FAR more!
Oh, & next year I'll remember that they're heavy and that the supports need to be MUCH stronger than this year's efforts!