(Button Snakeroot, Rattlesnake Master)

Sword-shaped clumps of spiny, gray-green leaves are topped in summer by tall stems of pale silvery-green flowers on the imposing rattlesnake master. A semi-evergreen perennial that grows from a deep taproot, it is native to the rocky, drier glades and prairies across the eastern United States. It is an upright plant that will become a tufted clump.

Each leaf is sword-shaped, blue-gray to gray-green and has spines along the edges. Leaves cluster in a basal rosette. In midsummer onwards, towering...

(Apricot Twist Wallflower, Wallflower)

The pretty orange and mauve-pink blooms of ‘Apricot Twist’ mix beautifully with purple-flowered salvias and sunny gold California poppies. The twist is that the flower buds are lavender-hued, which makes for an interesting contrast of colors.

This compact mound forming evergreen perennial produces clusters of cross-shaped flowers in early spring and then again in the fall. The fragrant flowers appear on upright stems above dense clumps of deep gray-green lance-shaped leaves.

Like most wallflowers,...

(Charity Mix Wallflower)

The collection of compact wallflowers in 'Charity Mix' produces fragrant flower clusters of yellow, white, red or scarlet. These hybrids are tough, short-lived perennials that grow best where summers are cool and mild, but can be used as cool season annuals elsewhere. One perk is that do not need as chilly of temperatures to initiate blossoms like other wallflowers.

The low mounding plants produce clusters of green lance-shaped leaves. They will flower year round in cool coastal climates, but...

(Citrona Orange Siberian Wallflower, Wallflower)

The bright tangerine blooms of ‘Citrona Orange’ will brighten any early border. The large fragrant clusters of flowers appear above compact vigorous plants. Wallflowers have been long cherished in English cottage gardens for their sweetly scented brightly colored blooms. They are tough short-lived perennials that grow best where summers are cool and mild.

The low mounding plants produce clusters of green lance-shaped leaves. ‘Citrona Orange’ blooms in spring and again in fall if well-tended...

(Citrona Yellow Wallflower, Wallflower)

The golden yellow blooms of ‘Citrona Yellow’ will brighten any early border. The large fragrant clusters of flowers appear above compact vigorous plants. Wallflowers have been long cherished in English cottage gardens for their sweetly scented brightly colored blooms. They are tough short-lived perennials that grow best where summers are cool and mild.

The low mounding plants produce clusters of green lance-shaped leaves. ‘Citrona Yellow’ blooms in spring and again in fall if well-tended...

(Gold Dust Wallflower, Wallflower)

The fragrant, bright yellow blooms of this compact wallflower make a colorful splash in the spring garden. Often used as an annual or biennial, this short-lived perennial produces erect spikes of cross-shaped blooms within 3 months of sowing. The calf-high flower stalks arise from dense clumps of deep gray-green lance-shaped leaves.

Like most wallflowers, ‘Gold Dust' grows best where summers are mild. It prefers full sun and well drained, moderately fertile, neutral to alkaline soil. Grow from...

(Gold Shot Wallflower, Wallflower)

Gold Shot wallflower is a short lived, mound forming evergreen perennial, often grown as an annual. In early spring, and then again in fall, 'Gold Shot' produces clusters of fragrant yellow flowers that appear on upright stems above masses of dense green foliage.

This wallflower needs full to part sun and average to well-drained soil that is all but overly acidic. This cultivar is a heavy feeder so provide regular fertilization to encourage bloom. This short-lived plant makes a nice addition...

(Goldrush Wallflower, Wallflower)

The fragrant, bright yellow blooms of this compact wallflower make a colorful splash in the spring garden. Often used as an annual or biennial, this short-lived perennial produces erect spikes of cross-shaped blooms within 4 months of sowing. The calf-high flower stalks arise from dense clumps of deep gray-green lance-shaped leaves.

Like most wallflowers, ‘Goldrush’ grows best where summers are mild. It prefers full sun and well drained, moderately fertile, neutral to alkaline soil. Cut back...

(Fragrant Sunshine™ Wallflower, Wallflower)

The sweetly scented brightly colored wallflower is a favorite where summers are cool and mild. They are particularly popular in the chalky soils of England where this variety originated. Fragrant Sunshine™ was bred by David Tristram in West Sussex, England and was derived from the open-pollinated seed parent Erysimum ‘Bredon’.

This compact mound-forming perennial produces blue-green lance-shaped foliage with a silvery sheen and a purple blush. Fragrant Sunshine™ blooms from mid-spring...

(Citrona Series Erysimum, Wallflower)

Wallflowers in the Citrona series produce many large fragrant clusters of flowers that may be yellow, gold or orange. These appear above compact vigorous plants. Wallflowers have been long cherished in English cottage gardens for their sweetly scented brightly colored blooms. These tough short-lived perennials grow best where summers are cool and mild.

The low mounding plants produce clusters of green to deep green lance-shaped leaves. The Citrona hybrids bloom in spring and again in fall...