Planting a tree and seeing it grow and thrive is one of the most long-lasting and fulfilling gardening experiences. I feel that way about the gingko in our front yard, but when it comes to wildlife value, a gingko is almost like having a plastic tree in your yard—it has zero value to the little critters that make nature work. A gingko attracts no caterpillars at all (which are essential for birds to raise their young), but a native oak, on the other hand, supports more than 550 species of caterpillars. According to Doug Tallamy, a professor of entomology and wildlife ecology at the University of Delaware and a leading voice in the movement to plant more natives, a single pair of chickadees needs 6,000 to 9,000 caterpillars to feed one clutch of young.
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