This coneflower from Holland's Arie Blom has made a real splash in our trials. The amazing branched flower spikes are composed of large, double white flowers, each surrounded by a row of single petals. For us, Echinacea 'Milkshake' starts flowering in midsummer and reblooms in the fall...attractive to hummingbirds. Although the breeder claims a 3' tall flower stem, our plants have never topped 2' tall.