(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...

(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...

(Wallflower)

From the dry, stony grasslands of northern Portugal and Spain, this evergreen wallflower is semi-woody and forms shrubby spreading clumps of foliage over time. Elongated clusters of pinkish purple flowers are produced from spring to fall and are especially prolific where summers are mild and dry. Where not hardy, it is a popular bedding annual because it’s fast growing, floriferous and tough.

Narrow, lance-shaped leaves of green to gray-green cover this low, bushy perennial all year around....

(Wallflower)

This is an exceptional variegated perennial. The beautiful leaves of variegated alpine wallflower have broad, creamy white margins that glow in sunlight. From spring to fall, upright clusters of purplish pink flowers are produced. Though not as robust as the parent species, it is still reasonably vigorous and easy to grow.

From the dry, stony grasslands of northern Portugal and Spain, Erysimum linifolium is semi-woody and forms shrubby spreading clumps of foliage over time. Elongated...

(Canary Island's Wallflower)

Little known but deserving notice for its beauty and drought resistance, this low evergreen shrub from the mountains of the Canary Islands makes a fine plant for dryland gardens. Bushy clumps of narrow lance shaped blue green leaves give rise to numerous spires of beautiful rose-pink flowers in late winter and early spring. The flowers have a mild sweet fragrance.

This sun-loving plant grows best in well drained, neutral to slightly alkaline soil. It is surprisingly cold hardy if given protection...

(Fireman's Cap, Shrub Coral Tree)

In late spring or summer the fiery scarlet-red flower spikes of fireman's cap emerge above the foliage and thorny stems. A deciduous shrub or small tree, it is a hybrid between the cry-baby tree (Erythrina crista-galli) and Cherokee bean (E. herbacea). The original cross occurred in the 1840s at Camden Park just outside of Adelaide, Australia. Fireman's cap becomes an open, sparse tree with upright to arching branches. At the coldest end of its hardiness, where winters have subfreezing...

(Apple Blossom Escallonia, Escallonia)

Bearing masses of pretty flowers over a long season, this medium-sized, dense evergreen shrub makes a handsome four-season ornamental for gardens with relatively mild winters. A hybrid dating from the early twentieth century, it has upright, sometimes sprawling branches set with small, narrowly oval, glossy dark green leaves. Plants may sucker modestly from the base. Opening from pink buds, the clustered soft-pink and white flowers appear in abundance in late spring and more sparingly through much...

(Dwarf Red Redclaws, Escallonia)

Bearing masses of pretty flowers over a long season, this dense, small to medium-sized, evergreen shrub makes a handsome four-season ornamental for gardens with relatively mild winters. A hybrid that traces its ancestry to species from South America, it has erect branches set with small, narrowly oval, glossy dark green leaves. Clusters of small, five-lobed, rosy-red flowers are borne in abundance in late spring and more sparingly through much of summer.

This sun-loving shrub prefers well-drained,...

(Escallonia)

An attractive and serviceable plant, this large upright evergreen shrub is a hybrid of Escallonia rosea and Escallonia rubra, both native to southern South America. Clusters of pink buds open to white flowers in summer, against a background of dark glossy leaves with pale undersides. The small, oval, toothed leaves emit a sweet fragrance in warm weather.

This shrub prefers well drained soil and full sun, with midday shade in hot climates. It tolerates many stresses including drought,...