Flower Delievery only appeared in the episode Penny Foolish. It is a company that delievers flowers. The company has a truck. Mr. Krabs used a truck from them in this episode. Mr. Krabs hided himself and some other things in the truck, and then he went to SpongeBob's House.
It looks like a boat. It has an antena on top, windows (one is on bottom of the truck) and flowers on sides.