Common Geraniums

  • tải xuống (1) With their broad color palette and adaptability, geraniums are among the most popular garden flowers in the world. According to plant expert Jennifer Schultz Nelson of the University of Illinois Extension, "The genus Geranium contains over 400 species of annual, perennial, and biennial plants, originating in many temperate regions of the world." These plants are often prized for their beautiful flowers and many also offer medicinal benefits as well.

Kashmir White

  • Native to the mountainous regions of Nepal, Pakistan, China and India, this common geranium produces white flowers that bloom in early summer. The Kashmir White geranium is a cultivar of the species Geranium clarkei. This perennial flower grows in USDA Zones 4 to 8 and will grow in full sun to partial shade. The Kashmir White geranium typically grows to heights of 15 to 18 inches and widths of 18 to 24 inches, according to

Brookside Cranesbill

  • Brookside Cransebill is a common hybrid geranium variety that displays showy bluish lavender flowers with white eyes. Its leaves are medium green throughout the spring and summer, turning yellow and red in the fall. This plant will grow in full sun to partial shade and blooms during the spring and summer. Brookside Cranesbill also produces small bird’s beak-shaped dry fruits. According to, this geranium "is truly one of the best blue-flowered cranesbills because of its beauty, robust habit and long blooming period."

Geranium Magnificum

  • Also known as Showy Geranium and Purple Cranesbill, Geranium Magnificum (Geranium X magnificum) produces large purple flowers that are twice the size of most common geraniums, measuring two inches of more. According to Gardening Central, the Geranium Magnificum is a hybrid of Geranium ibericum and Geranium platypetalum, which are both native to Turkey. This hardy plant can be planted with weeds and will spread rapidly, often crowding out unwanted plants.

Wild Geranium

  • Wild geranium, the common name for Geranium maculatum, is native to the United States and features basal leaves and pale lavender flowers. This plant typically inhabits woodlands, meadows and prairies. According to Illinois Wild Flowers, the wild geranium "is the showiest of the native geraniums with flowers at least 1 inch across." This plant prefers light shade to partial sun and loamy, dry soils.

Pests & Diseases Found on Geraniums


Geraniums, members of the genus Pelargonium, are easy to care for, decorative plants commonly used in gardens and window containers. However, these brightly colored flowering plants can suffer from infestations of insects, fungus and numerous diseases.


  • Geranium plants can fall victim to infestation by several insect pests, such as aphids, caterpillars, mealy bugs, spider mites, thrips and whiteflies. Therefore, you need to inspect plants and leaves regularly for signs of these pests. Additionally, geraniums that are kept indoors are particularly vulnerable to aphids and whiteflies.


  • Remember to remove dead flowers and leaves from your geraniums because they can promote growth of botrytis, a fungus that attacks young buds and leaves. Botrytis blight is likely to occur during cool, damp weather, and a fungicidal spray can be used preventively to keep geranium plants healthy.


  • Geraniums can suffer from several diseases, including bacterial leaf spot, black leg, edema, flower break virus, gray mold, mildew and xanthomonas blight. Look for signs of blue or black rotting on the stems, dropping leaves, round spots or dead areas on the leaves, wilting of the leaf edges and loss of luster.

Geranium Varieties


  • What most people think of as geraniums, the round-leaved red, white and pink flowering summer annuals, are actually Pelargoniums. True geraniums, also called "cranesbills" because of the shape of the seed head, belong to a genus of between 250 and 400 species of annual, bienniel and perennial plants. Geraniums are an underused group of easy-care plants with varieties that can grow from a petite 6 inches to over 30 inches in height. While often grown for their foliage, Geraniums also bear single and double flowers in pink, white, blue or lavender.

Bloodred Geranium

  • Bloodred Geranium (Geranium sanguineam), also called bloody cranesbill, is one of the oldest and most popular varieties. Its name comes from its deeply lobed leaves, which turn to deep red or maroon after the first hard frost. The most commonly grown true geranium in the United States, it is hardy from USDA zones 3 to 8. Bloodred geranium works well as a ground cover under shrubs such as viburnums or lilacs.

‘Johnson’s Blue’

  • ‘Johnson’s Blue’ is a hybrid of Geranium himalayense and Geranium pratense. It blooms in June in mounds of 15- to 18-inch tall bright blue, cup-shaped flowers. Like many of the cool-season blooming geraniums, it goes dormant in hot weather.

‘Black Beauty’

  • ‘Black Beauty’ is a summer blooming variety with a 15-inch spread that produces purple flowers on an 8- to 10-inch tall mound. Grown mainly for its fall foliage, it is one of the best dark-leaved varieties available.

Geranium macrorrhizum ‘White Ness’

  • Originally found on the slopes of Mount Olympus, ‘White Ness’ bears pure white flowers with long, yellow-tipped stamens throughout the summer. It grows in mounds from 8 to 10 inches tall and 18 to 24 inches wide.

Annual Geranium Plants

tải xuống The geranium (Pelargonium) popularly grown as a houseplant or in flower gardens for its bright, colorful blooms is an annual plant. If brought indoors for winter or grown in frost-free areas, the common geranium may live longer than one year.


  • Geranium species number more than 200, most of which originated in South Africa. The common geranium plant typically grows to heights of 12 to 18 inches. Flower colors include white, pink, fuchsia, orange, red and purple.

Growing Instructions

  • If planted outdoors, geraniums should be placed 12 inches apart in slightly dry soil. Indoors, geranium plants should be kept near a sunny window. Soil should be allowed to dry between waterings. A monthly application of fertilizer is recommended. Removal of dead flowers and leaves promotes new flowering.

Common Pests

  • Although hardy, geraniums may suffer from infestations of aphids, caterpillars, mites, slugs and whiteflies. In addition, they are susceptible to bacterial leaf spot, botrytis blight, rust and oedema—or dropsy. Most of these can be controlled with insecticides, fungicides and reduced watering.

Information on Alpenglow Geraniums

z Alpenglow geraniums are a variety of blood red geranium, also known as bloody cranesbill (Geranium sanguineum). This variety is known for the deep, luminous rose hue of its blossoms. The color is reminiscent of alpenglow, a reddish glow illuminating mountains at sunrise or sunset.


  • The Alpenglow geranium is a bushy, low growing plant with an average height of 6 inches and an average width of 24 inches. Like all Geranium sanguineum varieties, this plant bears roundish, thick, velvety, deeply lobed leaves. These leaves are dark green in the warmer months, adopting a striking crimson shade in the autumn. Deep magenta, five-petaled flowers emerge from May to August.

Growing Conditions

  • The Geranium sanguineum species is native to Portugal, Turkey and the Caucasus Mountains of Eurasia. These plants flourish naturally in dry woodlands, open rocky slopes and scrubby areas. They are tough and drought-resistant. Alpenglow geraniums are hardy in growing zones 3 to 9. They thrive in either full sun or partial shade.

Growing Tips

  • It is best to plant Alpenglow geraniums from seedlings in the spring after the year’s last frost has passed. Late May is a perfect time for planting. A well aerated, porous soil such as one containing some sand is ideal. For clay-heavy soils, some organic matter such as peat moss or manure should be added yearly.