You should let your villagers water the dead flowers with lagoon water if they want to. Something cool could happen!

As for the farm, these villagers really like carrots!! I wouldn't wait for them to plant broccoli or potatoes!

Also, when you move a villager who is carrying something, they will drop it (and you can't retrieve it). It's a big jolt to them to be suddenly picked up in the middle of their work!