Posted: 03/04/2017 at 12:06
Delphs can be very erratic, I am still getting some germination on the ones I sowed last year, others in the same pot, pricked out and potted on. Just leave them out in the GH or in a plastic one and let them take their time. I don't ever use a propagator, just sow in a rice/yogurt pot.
I find, and it may be just me, but aquilegia are not keen on being moved once germinated, try some just sprinkled on the soil where you want them to grow. They will self seed so must be ok sown straight outside.