Next time try a few in a zippy freezer bag, I use the 7 inch squares from Tesco, put a handful of damp medium vermiculite in the bag, put the seeds in and shake up, then seal the bag. Don't forget to write details on the bag
Put it somewhere warm and dark, don't unzip the bag until you see the green shoots appearing, then prick out seedlings when big enough and re-seal the bag, they don't all germinate at once.
If the integrifolias are true species wild collected, which I doubt, they will be true to type, blue about 3 ft. high.
If the seeds are garden or nursery collected, you have a possibility of raising white or pink forms of integrifolia from the seeds, don't give up, they are easy to grow and are wonderful border plants.