The greenhouse is atop the tallest building on Balding Avenue, and the third spy is being held captive there.
(see the related question)
There is no greenhouse on Spy Island.
you go back to the bottom and exit the shoot thing
The Venus Flytrap plants will attack you in the greenhouse on Spy Island. Avoid them by jumping on the other hanging plants instead.
hide
the chef is inside the bistro
its inside a building in spy island.
He means to shoot the bowtie over to the antenna on top of the building to your right, where you will enter the greenhouse.
The greenhouse is atop the tallest building on Balding Avenue, and the third spy is being held captive there. You will need the grappling bowtie from the second spy in order to reach the rooftop above the Grease Monkey garage.(see the related question)On top of the highest building.
Go farther left to the red building, climb the tower, then grapple back to the right to reach the antenna where the greenhouse is located.
Spy Island is island #6. After Spy Island is Nabooti Island #7
He's inside a bared roof, but you need the laser pen you get from the 1st spy you save in the docks.
You have to find the third agent. She will give you the goggles and the last password clue.