Excuse me, where are your plants?

Scene 1:  Inside the greenhouse.  The setting: As you approach Bob's Greenhouse, you are first greeted by a multitude of annuals.  As you walk past the front gate, tables upon tables of flowers greet you.  Enter the main greenhouse, and you are surrounded from floor to ceiling in more annuals.  Outside are rows upon rows of perennials, trees, shrubs, edibles, and garden decor.  Today, we find Miss Frodo watering hanging baskets and flats of petunias toward the rear of the greenhouse.  A middle-aged man approaches, looking anxious.
"Excuse me," he says, "Where are your plants?"
Miss Frodo blinks.
"I can't find any plants.  Do you have any?"
There are several responses ready to come out of my mouth, but none seem adequate in this situation:  "No, I'm afraid we're fresh out of plants."  "Sir, if you can't see any plants, I don't think I can help you."
Very slowly, I said, "What kind of plants?"
"You know," he replies, "Plants."  He seems very frustrated that I don't seem to know what a plant is.  The feeling, at this point, is probably mutual.
"Um," I say helpfully.  I glance around at the hundreds of specimens in this room alone.
"Plants," he tries again.    Now, we're about to get somewhere.  "You know, seedlings."
I consider all baby plants to be "seedlings."  He's ruled out some perennials as well as the larger trees on our property.  I furrow my brow, hoping to receive some telekinetic signal from him.
After a short period of struggle, he utters the magic word: "Vegetables."  Ah!  Yes, we have lots of those.  Right out front.  He probably walked past them without even knowing.  But then, how can you blame him?  All he wanted was to find some plants.