Botanical name: Helianthemum
Botanical name: Helianthemum
Frostweed is a genus of about 110 species of flowering plants in the family Cistaceae. They are widely distributed throughout the Northern Hemisphere, especially in the Mediterranean. These are usually shrubs or subshrubs, and some are annual or perennial herbs. The leaves are oppositely arranged, but some plants may have alternately arranged leaves along the upper stems. The flowers are solitary or borne in an array of inflorescence types, such as panicles, racemes, or headlike clusters. The flower has three inner sepals and two smaller outer sepals. It has five petals usually in shades of yellow, orange, or pink. The style at the center is tipped with a large stigma. The fruit is a capsule containing many seeds.
Species of frostweed
Rock rose 'The Bride'
Rock rose 'The Bride' is a genus of about 110 species of flowering plants in the family Cistaceae. They are widely distributed throughout the Northern Hemisphere, especially in the Mediterranean. These are usually shrubs or subshrubs, and some are annual or perennial herbs. The leaves are oppositely arranged, but some plants may have alternately arranged leaves along the upper stems. The flowers are solitary or borne in an array of inflorescence types, such as panicles, racemes, or headlike clusters. The flower has three inner sepals and two smaller outer sepals. It has five petals usually in shades of yellow, orange, or pink. The style at the center is tipped with a large stigma. The fruit is a capsule containing many seeds.
Shrubby rockrose 'Mrs C.W. Earle'
Shrubby rockrose 'Mrs C.W. Earle' is the red cultivar of the Helianthemum and is unique because its blooms stand far away from its leaves. Shrubby rockrose 'Mrs C.W. Earle' is presumably named in honor of the British horticulturalist, Mrs. Theresa Earle. This evergreen shrub is fairly pest and disease-free. Its also easy to grow, even in poor soil conditions.
Rock rose 'Wisley Primrose'
The striking rock rose 'Wisley Primrose' cultivar has yellow flowers like its parent Helianthemum nummularium plant, but the cultivar's unique petals are folded over each other like roses. This attractive primrose is named Helianthemum nummularium 'Wisley Primrose’ after Wisley Garden, a celebrated English ornamental garden curated by the Royal Horticultural Society.
Helianthemum songaricum (Helianthemum songaricum) is a dwarf shrub species that is native to arid regions in northwestern China. It was once fairly common and widespread but is now an endangered species and considered a plant relic.
Common rock-rose 'Raspberry Ripple'
Common rock-rose 'Raspberry Ripple' is a cultivar of Common rock-rose with petals that have ripples of raspberry mixed with white. Each plant will have a unique pattern of these two colors, with no two plants looking the same. In contrast, the flowers of the parent plant are solid yellow with little variety.
White retriever is a perennial half-shrub that thrives in dry gravelly soil. This plant's genus name, Helianthemum, originates from the ancient Greek words "Helios," the Sun, and "anthemos," which means "flowered," referring to the fact that the flowers only open when they receive ample heat from the Sun.
Common rock-rose is a European evergreen shrub that has a trailing habit. It produces charming yellow and white flowers and is best for landscaping banks, slopes, and rock gardens. Bees, beetles, and butterflies commonly visit this plant.
Lavender-leaved rockrose is noted for its dwarf size and hardiness. This is an evergreen perennial shrub that flourishes in rocky shrubland and open woodland. Lavender-leaved rockrose is named for its ability to grow between rocks and its leaves similar to those of lavender plants. It is often used in rockeries and as an aesthetic feature between walls.
Common rock-rose 'Rhodanthe Carneum'
Common rock-rose 'Rhodanthe Carneum' is a cultivated plant from the rockrose genus bred for the color of its blooms. The low-growing plant is popular as a ground cover in the spring and summer. Like other plants in the genus, the blooms open in the sun. It’s the flowers' light pink color that sets common rock-rose 'Rhodanthe Carneum' apart.
Common rock-rose 'Fire Dragon'
The red and yellow flowers of the common rock-rose 'Fire Dragon' stand in marked contrast to the plain yellow flowers of the parent rock-rose plant. With a name like 'Fire Dragon,' you'd expect red or yellow flowers, and with this showy garden performer, you get both. That combination helps explain its enduring garden appeal.
Helianthemum hirtum is an evergreen shrub that naturally grows in thickets in limestone-dolomitic areas. It requires a lot of sun and is short-lived. Due to its beautiful yellow flowers, this plant is often used in rock gardens as a decorative feature.
Rock rose 'Red Dragon'
A long-flowering cultivar, the rock rose 'Red Dragon' is hardy, tolerant of dry conditions, a prolific bloomer, and easy for gardeners to grow. Its parentage is unknown, but it is likely named 'Red Dragon' for its vividly red petals and gold center. A very upright cultivar, the rock rose 'Red Dragon' can be grown in rock gardens, slopes, banks, containers, and even as a ground cover.
Helianthemum nummularium 'Henfield Brilliant’
Helianthemum nummularium 'Henfield Brilliant’ is certainly a brilliant cultivar of Helianthemum nummularium. Its flower is a magnificent blood-orange that is far more ostentatious than the yellow of the wild parent species, and it grows shorter and more compactly. This cultivar may be named after the town of Henfield in England.
White rock-rose (Helianthemum apenninum) is an evergreen perennial dwarf shrub that is native to much of Europe where it grows on rocky slopes and dry grassy areas. The plant blooms prolifically through spring to summer and produces flowers with crinkly white petals and bright yellow centers.