Wildflower seed is germinating

The wildflowers that I planted in pots last fall are beginning to germinate. I notice most of the asters and goldenrods have germinated as well as the beardtongues. The evening primrose are germinating too. Milkweeds have not, but they tend to like warmer temperatures. Seeds in the garden haven't germinated. I need to put some grass clippings on the row to keep the soil moist.