To propagate your anemone:
Divide the bulbs in the fall in colder climates where the anemone isn't hardy.
Dig the bulbs carefully after the foliage has turned yellow and dried when the weather temperatures cool (avoid puncturing). Gently brush off the soil but never wash them with water as this can cause fungus issues later in storage. Divide them and lay them out in a single layer to air dry for several days and knock off any remaining soil afterward. Remove all the dead leaves at this point.
Sprinkle the tubers with a fungicide such as sulfur plant fungicide dust to prevent disease and rot.
Store them in a dry mixture of coco coir and perlite or completely dry pet bedding. Put this mixture in a dry paper box and loosely layer the bulbs.
Place the box on a shelf in a dark location of your home. Leave it where humidity is low and the temperature is around 60°F.
Take a look at them monthly to ensure that they are not moist and moldy. If you detect either, throw the bulb out before it infects the others.
After dormancy, select the most healthy-looking bulbs to replant.
Follow the directions on planting and water in well! Enjoy your new crop of anemones or share with your besties!
If you're in a hardy USDA growing zone of 8 or above, you can leave the bulbs in the ground over the winter. Then, in the spring (May in most locations after the last frost), carefully dig them up, divide the tubers and replant them in several areas in the landscape or decorative patio containers.