Q.growing astrantia
Can an Astrantia be started in a pot, then replanted in garden in the spring?

Certified GKH Gardening Expert
Yes, you can plant Astrantia from seed indoors, then transplant to the garden later. The seeds need to be cold stratified first- in nature this happens outdoors during the winter, but you can achieve it by placing them in the refrigerator for 2 to 3 months. Then they will be ready to plant indoors.
https://www.gardeningknowhow.com/ornamental/flowers/astrantia/astrantia-masterwort-plant.htm
https://www.gardeningknowhow.com/garden-how-to/seeds/seed-stratification.htm