Here are a few close-ups of the non-plant ID images used in the Garden signage.
Food waste that can be used for composting. This image was a simple pencil sketch composed from various photos and colored in Photoshop.
Compost and worms. Again, a simple sketch composed from various worm and compost photos, colored in Photoshop.
Organic pesticides. Usually when I do a vector image of an existing object, I start out with a trace of a photo of the object, usually low res, and adjust accordingly.
A close up of the home with the programmable drip irrigation box. Composed from various Illustrator and Photoshop elements.