All parts of Zig Zag Goldenrod are useful to a wide variety of wildlife. Deer forage on the foliage. Butterflies, bees, wasps, and flies drink the nectar, and bees also collect the pollen. The seeds are eaten by sparrows. Many types of moths, stink bugs, fruit flies, and aphids feed on flowers, seeds, or roots. There are too many species to name that depend, in part, or even in whole, on Solidago plants.
This genus may be plentiful in our landscape, but a lot of things depend on this late bloomer, and it really should not be taken for granted.
A word on bees. Some bees of the genera Andrena and Colletes focus solely on collecting the nectar and pollen of goldenrods. The less-dependent species will use goldenrod exclusively while it’s in bloom and then simply switch to a different plant when they are out of bloom. Other species within these genera of bees are so dependent upon goldenrod that proper larval development depends upon their receiving pollen from Solidago spp.