Mesa Yellow Gaillardia Seeds. This A.A.S. winner for 2010 was the first F1 Hybrid Gaillardia from seed. Vigourous 45 cm (18″) high plants are loaded with brilliant yellow 7.5 cm (3″) wide daisy-like flowers. A favourite of insect pollinators and butterflies. Blooms through the summer. A great plant to use in containers.