Posted: 12/03/2013 at 11:56
Some seeds actually need a frost, thaw, frost process to break dormancy and I have several small bags of seeds in damp compost out the back of the house to see if I can provoke them into germinating - Japanese maples, clematis, rowans....
Others will germinate given damp compost and normal temps. Some like lettuces won't germinate when it's too warm while others require bottom heat to convince them it's safe to germinate. It depends on the origins of the plant.
As for you seeds, you'll just have to wait and see. Give them 10 to 14 days indoors on a window sill before you give up but be prepared to re-sow.