The Halcyon Grange in Blue Hill is hosting a culinary seaweed workshop with Micah Woodcock of Atlantic Holdfast Seaweed Co. on Thursday, Feb 23, at 5 pm. The workshop is followed by a soup supper at 6. The workshop is free of charge and all are welcome. Halcyon Grange No. 345 is located at 1157 Pleasant St. in Blue Hill.