Archive for 16/04/2013


Aly Baumgartner

The history of science is full of interesting characters, and Carl Linnaeus certainly fits the bill. Known as the father of modern taxonomy, he was born in Sweden on May 23rd, 1707. He was only the second generation of the name Linnaeus. In fact, when his father enrolled in school he was required to take a family name (instead of using the patronymic name Ingemarsson) and he chose Linnaeus after a giant linden tree that grew on his family homestead. With a name like that, Carl seemed to be destined for biological greatness.

Linnaeus showed an interest in botany from a very young age. His father, an amateur botanist, encouraged his son’s enthusiasm. When he enrolled at the Lund University in 1727, he knew that botany was a very serious subject. He registered under the name ‘Carolus Linnæus’, the latinized form of his name. He later would use this form…

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Dragon Trees | Socotra Island | Republic of Yemen

Geranium 'Johnson's Blue'

Geranium ‘Johnson’s Blue’

Geraniums comprise over 400 species of annual, biennial and perennial plants commonly known as ‘Cranesbills’. They originate from around the globe.The perennials are very useful as border plants, with beautiful flowers. They are easy to grow, long lasting and are useful ground cover. Underplanted with spring bulbs, their leaves are good at hiding untidy bulb foliage after flowering. They also give new life to a border otherwise left bare when the spring bulbs are over.

They don’t like waterlogged soil and so in the wild you find them all habitats except boggy ones. They are a diverse group, varying in both hardiness and their growing needs. G. malviflorum is unusual in that it makes top -growth through the winter, flowers in spring and disappears until winter!

Geranium pratense (Meadow Cranesbill)

Geranium pratense (Meadow Cranesbill)

Geranium platypetalum

Geranium platypetalum

Geranium dissectum

Geranium dissectum

Most Geranium flowers are saucer-shaped, but can be flat or star like. They can come in umbels, panicles or cymes. They range in colour from white to dark plum through an array of pinks, blues and purples. Leaves are grouped around the base and the stem and are often deeply divided and toothed, and some are evergreen.

Many species are floppy or scramble and most need some sort of support to make them look reasonable. They all need shearing over the autumn/winter to encourage new basal growth, and some species, if sheared immediately after flowering will put on a second flush of leaves and flowers. Propagate by taking semi-ripe cuttings in summer, by seed, or by division in autumn or spring.

Geranium sanguineum showing 'bill' which aids seed dispersal

Geranium sanguineum showing ‘bill’ which aids seed dispersal

Most are drought tolerant and all are low in allergens. Some, such as G. nodosum and G. procurrens root when their stems touch the soil and G. thunbergii self seeds to a considerable extent, so should be deadheaded before the seeds form, if you want to restrict its spread.

Pelargoniums are often given the common name ‘Geranium’- both genuses are members of the Geraniaceae family. both were originally part of one family as defined by the botanist Linnaeus.

Geranium maculatum

Geranium maculatum

Geranium maderense

Geranium maderense

Further information:

10 AGM Hardy Geraniums for the garden- RHS

‘Geraniums- my hardy heroes’ – article by Bunny Guinness

Geraniums for shady places

National Collection of Geraniums- Cambridge Botanic Garden

Geranium phaeum - from Thomé Flora von Deutschland, Österreich und der Schweiz 1885

Geranium phaeum – from Thomé ‘Flora von Deutschland, Österreich und der Schweiz’ 1885

Old School Gardener

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