Zinnias, cosmos, rudbeckia, Echinacea and coreopsis are flowers that form seed heads that attract gold finches. For goldfinches, teasels come into their own in autumn and winter when the seed heads dry out. These simple fabric feeders are not great for long-term use. In summer teasels have pale purple flowers which go down a storm with bees, butterflies and moths. One day I saw a goldfinch nibbling on a zinnia flower. To use your flower garden to attract gold finches, do not deadhead all of your flowers, but allow some of them to go to seed. In early summer goldfinches feed on the seeds of small plants such as dandelions and in late summer thistles and teasels become their most important source of food. You can start by planting some of their favorite things—brightly colored flowers. What actually attracted the very first goldfinch was flowers in my garden. Sunflower seeds attract many species of birds, gold finches among them. One of the most popular, recognizable, and easy to attract birds in the United States, the American Goldfinch is found most frequently in weedy fields and backyards that are full of their favorite seed bearing flowers, such as native Thistle, Aster, Sunflower, and Coneflower. How to Attract American Goldfinch. The goldfinches' thin beaks are ideally suited for tweezering the tiny seeds from between the spikes. Thrilled, I immediately put up a nyjer-filled sock style feeder on a little sapling tree nearby.