11. Corn Corn tassels produce large amounts of pollen that is a nutritious protein source for many beneficials. And while we usually don't think of corn as an ornamental, it's actually very striking when planted in flower beds. Think of it as a very fast- growing, tall ornamental grass. And if you want an extra bit of beauty, try the 'Japonica' corn which has green, white and pink variegated leaves.
Photo: (cc) Matt Lavin/Flickr