In many cultures, it is customary to show your regard for the deceased person by sending flowers or plants to his or her funeral or memorial service.
When an obituary states, “in lieu of flowers,” it means the family does not wish for flowers or plants to be sent to the service. Instead, they may want you to make a small monetary donation to a favorite charity or organization in the name of their loved one.
It’s not necessary to purchase something to share your condolences with the family. You could send a note or card with a favorite memory of the person who passed away.