If your using them for brush shelters at the lake, don't overlook fake trees. They don't shed the little leaves, and your jigs won't hang up in them like evergreens that shed and leave little bare limbs.
For my pond....but same idea...I've got a fake one that I had considered putting in, but we swim in the pond and I was thinking about it rusting and getting sharp edges over time...maybe I'll just through it in too...