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Plants Matching biennial

Returned 54 results. Page 2 of 6.

Image of Cynoglossum amabile

James H. Schutte

(Chinese Forget-Me-Not, Summer Forget-Me-Not)

Prized for its summer-long display of azure flowers, 'Blue Shower' is a tall, floriferous, seed-grown selection of Chinese forget-me-not, a short-lived tender perennial from East Asia. It is typically grown as an annual or biennial.

Dense clumps of felted, gray-green, lance-shaped to oval leaves give rise to one-sided sprays of small, five-lobed, sky-blue flowers on knee-high stems. Flowering begins in early spring or 2 months after sowing, continuing as long as temperatures remain mild. Small,...

Image of Dianthus barbatus

Jessie Keith

(Heart Attack Sweet William, Sweet William)

While most cultivars of Sweet William are biennials, 'Heart Attack' performs as a perennial if sheared after flowering, or as a biennial if allowed to self-seed. The plant grows in a thick mat of wiry stems and lance-shaped leaves. In late spring the familiar carnation flowers in flat clusters cover the plant. The flower color is an unusual reddish-black. The species is native to southern Europe.

For best growth and flowering, 'Heart Attack' needs well-drained soil rich in organic matter and...

(Sweet William, Wee Willie Mix Sweet William)

The bicolored flowers of sweet william selection ‘Wee Willie’ add a striking note of depth to the late spring garden. Its dense clusters of single, fringed, disk-like blossoms appear from late spring through midsummer and are in tones of red, pink and white. They rise on sturdy stems rise amid clumps of flat, lance shaped, dark green foliage which bears tints of burgundy. The colorful, lightly scented blooms may be visited by bees and butterflies.

Originally native to southern Europe, sweet...

Image of Dianthus barbatus (BARBARINI™ FORMULA MIX, BARBARINI™ SERIES) photo by: Syngenta

Syngenta

(Barbarini™ Mix Sweet William, Sweet William)

Offering a new take on an old favorite, sweet william in the Barbarini™ Series are distinguished by their compact habit and ability to bloom the first year from seed. This formula mixture includes an array of solid and bicolor flowers in shades of white, pink, lavender, red and purple. The fringed, fragrant blooms are borne in large clusters on short, sturdy stems from late spring through midsummer. They rise amid tufts of narrow, deep green foliage, and are visited by bees and butterflies.

Sweet...

Image of Digitalis grandiflora photo by: James H. Schutte

James H. Schutte

(Large Yellow Foxglove, Yellow Foxglove)

Yellow foxglove is native to southern Europe, Siberia and Turkey. It is a biennial or short-lived perennial loved for its spring to summer tall flower spikes of pendulous pale yellow flowers which are tubular and marked with brown on the inside. Tall narrow-leaved stems arise from a clump-forming mound of medium green foliage. The leaves are oval to lance-shaped, soft and alternate on the flower stems. Both stems and leaves are softly fuzzy. The fruit is a capsule filled with seeds. Yellow foxglove...

Image of Digitalis grandiflora

James H. Schutte

(Carillion Yellow Foxglove, Yellow Foxglove)

Yellow foxglove is native to southern Europe, Siberia and Turkey. The cultivar ‘Carillion’ is a biennial or short-lived perennial dwarf selection loved for its spring to summer flower spikes of pendulous pale yellow flowers which are tubular and marked with brown on the inside. Narrow-leaved stems rise above the mound of medium green foliage. The leaves are oval to lance-shaped, soft and alternate on the flower stems. Both stems and leaves are softly fuzzy. The fruit is a capsule filled with seeds....

Image of Digitalis grandiflora

Jesse Saylor

(Temple Bells Foxglove, Yellow Foxglove)

Yellow foxglove is native to southern Europe, Siberia and Turkey. It is a biennial or short-lived perennial loved for its spring to summer tall flower spikes of pendulous pale yellow flowers which are tubular and marked with brown on the inside. Tall narrow-leaved stems arise from a clump-forming mound of medium green foliage. The leaves are oval to lance-shaped, soft and alternate on the flower stems. Both stems and leaves are softly fuzzy. The fruit is a capsule filled with seeds. Yellow foxglove...

Image of Dipsacus fullonum photo by: Jesse Saylor

Jesse Saylor

(Fuller's Teasel)

A Eurasian native whose seedheads were once used to tease wool and nap leather, this well-armed biennial or short-lived perennial is now an invasive nuisance in parts of the United States and other countries. From an overwintering rosette of toothed oval leaves it produces a tall branching prickly stem lined with paired opposite spiny leaves that fuse at the base. The stem branches terminate in large bristly thimble-shaped flowerheads with long spiny basal bracts. Small tubular purple flowers open...

Image of Echium pininana photo by: James H. Schutte

James H. Schutte

(Giant Viper's Bugloss, Pine Echium, Tree Echium)

Small, unassuming rosettes of linear, dusty green foliage develop floral columns lined with small violet-blue flowers that burst upward to heights of 8- to 10-feet (2.5- to 3.25-meters). A native of the dry inland laurel forests of the Canary Islands, tree echium survives as a half-hardy biennial. It is a spectacular plant in bloom and has become endangered in its native habitat, though it is very popular in cultivation.

Dense rosettes of linear, silvery or dusty green foliage overwinter and...

Image of Echium vulgare photo by: Jesse Saylor

Jesse Saylor

(Common Viper's Bugloss)

Native to Europe and western Asia and a common roadside weed over much of the United States, this bristly biennial is grown for its tall summer-long spikes of azure flowers.

First-year seedlings of this hardy biennial form broad rosettes of large, rough, lance-shaped leaves. The following growing season, long steeple-like clusters of small funnel-shaped blooms are borne on stout upright stems that continue to appear from late spring to late summer. Flowers are typically pink aging to blue, but...