Wake up a sleepy garden with a burst of gold.
Indian Summer black-eyed Susan (Rudbeckia 'Indian Summer') is a flower garden workhorse. From midsummer to frost, this rugged, easy-to-grow plant produces masses of long-lasting golden yellow, daisy-like flowers with contrasting brown centers. The flowers are excellent for cutting.
Bearing yellow or orange daisy-like flowers through the summer and into fall, Kelway golden marguerite (Anthemis tinctoria 'Kelwayi') is a cheerful perennial for the cut flower or border garden. The abundant blooms are held aloft on sturdy, long stems that reach up to 3 feet tall.
Also called butter-and-eggs, yellow toadflax (Linaria vulgaris) produces snapdragon-like flower spikes in early spring. Its vigorous growth has landed it on the "noxious weed list" in some states; where it is allowed, it should be planted in an enclosed area where its extensive root system can be controlled.
If you like yellow flowers, why not make a border of them? There are many easy-to-grow perennials that will bring sunshine to your garden, including daylilies (Hemerocallis) and ox-eye daisy (Heliopsis helianthoides), shown here at the peak of their summer display.