Geranium

 

Basic Facts:

(Common Name: Cranesbill, Hardy Geranium).

Garden Use:

There are varieties suitable for a wide range of uses - ground cover, trailing, mid-border, sun, dense shade. In fact the only situation I've not come across a Geranium to fill is very boggy or in water - but I have a sneaking suspicion there's one out there somewhere.

Wildlife Interest:

Geraniums are great plants for bees.

Cut Flower Use:

Not tried.

Cultivation:

Different species require different conditions and there is a Geranium to suit most gardens.

There are quite invasive types among the goodies so read up about them first.

Not all "Hardy Geraniums" are hardy! - all of ours are though.

Propagation:

Propagation and care differs between species - see below for specific notes.

Pests and Diseases:

The only specific pest we've experienced is a saw fly caterpillar that makes holes in the leaves in late summer.

History:

The common name is a reference to the shape of the seed capsules. Hardy Geraniums should not be confused with their half-hardy distant cousins, the Pelagoniums, which are commonly called Geraniums just to confuse things! 

A member of the Geraniaceae family.

Geranium Elke

Sanguineum type but with large white-edged pink flowers for a long season. Low mat former and a great edger.

Price £4.50 (9cm pot)

Geranium himalayense Gravetye

Low growing, repeat blooming and spreading

Price £4.50 (9cm pot)

Geranium himalayense Plenum

Double form, also known as Birch's Double

Price £4.50 (9cm pot)

Geranium macrorrhizum White-Ness

Discovered on an expedition by Ness Botanic Gardens, this form has pure white flowers over a very long period - even carrying some flower into the autumn. Unlike other varieties, the leaves are glossy and are not aromatic leading me to suspect it is cross with another species.

RHS Award of Garden Merit

Price £5.00 (9cm pot)

Geranium x.oxonianum Sherwood

The star-shaped pink flowers appear from May onwards on plants reaching 1 1/2ft.

Price £4.50 (9cm) order now for spring delivery

Geranium x.oxonianum Spring Fling

Flamboyantly variegated leaves in spring and early summer. Pale pink, darker veined flowers in summer. A great plant!

Price £5.00 (9cm pot) order now for spring delivery

Geranium Patricia

Raised by Alan Bremer

Brilliant magenta with a black eye. Flowers all summer. Quite bushy plants about 1ft 6in tall. It is a hybrid of GG.endressii and psilostemon.

Divide in spring. We've had failures in a cold winter when dividing in autumn.

RHS Award of Garden Merit

Price £4.50 (9cm pot)

Geranium phaeum

Great for dry shade these plants from neat clumps of large, often patterned leaves and have flowers on top of 2ft stems in late spring into summer and often continue in the late summer, albeit reduced in number.

These will self seed, but not excessively but we propagate by division to ensure purity of type. I only divide plants in spring as they don't do well in pots in winter but for planting in the garden they can be divided in autumn.

Geranium phaeum Album

Pure white form with plain green leaves.

Rather lovely especially with the sun shining through the petals revealing the star-shape calyx in silhouette.

RHS Award of Garden Merit

price £4.50 (9cm pot)

Geranium phaeum Joan Baker

Beautiful soft blue-pink flowers on neat plants

About 1ft 6in / 45cm tall in flower

Price £5.00 (9cm pot)

Geranium phaeum Rachel's Rhapsody

Mosaic-like variegation to the large leaves in yellow and green with dots of red. Rather weird. Flowers are typical maroon phaeum type.

Makes a large leaf mound about 2ft tall.

Price £5.00 (9cm pot)

Geranium phaeum Springtime

Large, bold leaves with white, maroon and green patterns. Typical phaeum flowers.

This one has plant varietal rights so we have to buy in divisions rather than propagate ourselves.

Price £5.00 (9cm pot)

Geranium phaeum Variegatum

Leaves boldly splashed with white, red and silver. Flowers are the typical phaeum maroon colour.

Price £5.00 (9cm pot) order now for spring delivery

Geranium Rozanne

Such a long flowering period: from June to October and beyond. Trailing stems that provide ground cover or cascade over edges or from pots.

No wonder she was voted "Plant of the Centenary" at RHS Chelsea in 2013.

Around  9-12in. tall and spreading to 1-2ft. Planting distance 18in.

Flowers keep their best colour when growing in light shade.

RHS Award of Garden Merit

Price £5.00 (9cm pot) order now for spring delivery

Geranium sanguineum

Good ground cover for well-drained soil in sun. Low growing (about 9 - 12" tall) and giving good autumn leaf colour. Best in sun.

Give the plants a trim after the first flush of flowers (May - July) and they will flower again later in summer.

They will seed but not come true. Best propagated by division or even root cuttings.

See also Geranium Elke above and Tiny Monster below.

Geranium sanguineum Album

Pure white version of this lovely mat forming plant. Rather more upright than other types

RHS Award of Garden Merit

Price £4.50 (9cm pot)

Geranium sanguineum Striatum

Pale pink flowers with deeper rose veins in early summer and again in autumn.

RHS Award of Garden Merit

Price £4.50 (9cm pot)

Geranium sanguineums are a great favourite with Carder Bees

Geranium Stephanie

Leaves like Geranium renardii and pearly pale violet flowers from April - June. Low growing and great in dry and poor soils but give her some TLC and you won't regret it! Needs a sunny spot.

Propagate by division in spring.

Price £5.00 (9cm pot) order now for spring delivery

Geranium Tiny Monster

This is a cross between Geraniums sanguineum and psilostemon producing a low-growing plants (like a sanguineum) with large, magenta flowers like psilostemon (albeit lacking the black eye). They do well in dry, sunny spots and flower from May through to the autumn with a little rest in high summer.

Propagate by division in spring or by root cuttings.

Price £4.50 (9cm pot)

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