Geum plants are hardy perennials that range from 15 to 90 cm in height.
They bloom in the summer when they carry circular red, white, purple or yellow flowers.
Commonly grown species in the garden are Mountain Avens, Wood Avens, White, yellow and purple Avens, and Alpine Avens.
Some of the common latin name of Geum species include Geum triflorum, Geum chiloense, Geum borisii and Geum aleppicum.
Geum pentapetalum by kabacchi.
Geum triflorum - Prairie Smoke by gmayfield10.
Common Names: Avens, Geum, Prairie Smoke, Herb Bennet.
Life Cycle: Hardy perennial.
Height: 6 to 36 inches (15 to 90 cm).
Growing Region: Zones 2 to 9.
Flowers: Late spring and summer.
Flower Details: Red, yellow. Saucer-shaped. Egg-shaped.
Foliage: Herbaceous. Green. Fuzzy. Flabellate.
Sow Outside: Cover seed. Start of spring - before the last frost, or the beginning of autumn. Spacing 12 to 18 inches (30 to 45 cm).
Sow Inside: Germination time: three weeks to one month. Temperature: 65 to 70°F (18 to 21°C). Two months in advance. Six or seven weeks before expected last frost. Transplant outdoors following before last frost or in early autumn.
Requirements and care: Full sunlight (hot areas: light shade). Good drainage.
Soil pH 5.5 to 7.0. Rich soil. Deadhead. Winter mulch in colder areas. Divided every three years in order to maintain vigour. Propagate: by dividing in the autumn.
Miscellaneous: Members of the Geum genus are attractive to many kinds of butterfly including the Grizzled Skipper.
If growing Avens and other Geum plant species from seed, then sow outdoors at either the start of spring or autumn; lightly cover the Geum seeds once sown. Avens likes to grow in sunny areas of the garden that has good drainage; they can tolerate partial shade in hot climates. Ideally the soil that the plant grows in will be rich and slightly acidic to neutral pH (5.5 to 7).
If first growing indoors then sow Geum seeds about 10 weeks in advance. It should take three to four weeks for Avens to germinate at 18 to 21 degrees centigrade. Once ready transplant into the garden at the start of spring or autumn with a spacing of 30 to 45 cm.
Geum plants such as Purple and Mountain Avens are easy to grow and look after. It is a good idea to remove dead flowers to prolong blooming and to keep them tidy. Supply a mulch in winter. When the plants begin to look tired (about four years) divide them to maintain vigor. If you require more plants then propagate by division in the autumn.