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Geranium oxonianum Katherine Adele

Geranium x oxonianum Katherine Adele
Oxford Geranium, Hardy Geranium

4,8/5
10 reviews
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1 reviews
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Doesn't thrive much at the base of my hydrangea, not many flowers.

Christophe, 02/08/2022

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This plant carries a 12 months recovery warranty

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Value-for-money
This perennial geranium is an excellent ground cover, vigorous and floriferous. It offers a long summer flowering, white to very pale pink, veined with dark pink. Close to G. versicolor, from which it originates, it is also vigorous, but shorter and more spreading. The foliage is green, lighter in young leaves, distinctly marbled with purple. It can eventually form mats up to 80 cm (32in) in diameter. Content with rainwater in summer, it is a hardy and accommodating plant that will thrive in full sun.
Flower size
2 cm
Height at maturity
45 cm
Spread at maturity
80 cm
Exposure
Sun, Partial shade, Shade
Hardiness
Hardy down to -29°C
Soil moisture
Moist soil
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Recommended planting time February to April, September to November
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Flowering time May to September
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Description

The perennial geranium oxonianum 'Katherine Adele', also known as the hybrid perennial geranium 'Katherine Adele', is an excellent spreading and floriferous ground cover that offers a long summer flowering period. Its flowers are white to very pale pink, with dark pink veins. This recent hybrid, closely related to G. versicolor, from which it originates, is also vigorous but shorter. The foliage is distinctly marbled with purple, lighter on the young leaves. It can eventually form mats up to 80 cm (32in) in diameter. This plant is hardy and adaptable, requiring only rainwater in the summer, and will thrive in full sun.

The perennial geranium oxonianum 'Katherine Adele' belongs to the Geraniaceae family. It is the result of cross-breeding between G. endressii, a robust deciduous ground cover from the Pyrenees, and G. versicolor, a taller evergreen variety from Italy that tolerates relative drought. This hybrid forms a minimum 45 cm (18in) high ground cover that can spread up to 80 cm (32in) or more under optimal conditions. It has an upright, dense and spreading growth habit. Between May and August, it produces open cup-shaped flowers, pale pink to white with purple veins. Its leaves are plicate and deeply divided, with visible veins, lobed, and divided into five lobes. The juvenile foliage is pale and clearly marked with purple towards the stem. The mature foliage is also maculate with purple, of a slightly darker green shade. This hybrid is fertile.

This perennial geranium is a large and easy-to-grow ground cover that will find its place in perennial or low shrub borders, high edges, slopes, rock gardens, or large pots on the terrace. It forms a beautiful combination with old roses, such as 'Felicia', Cotoneaster atropurpureus 'Variegatus', or spreads at the base of Libertia peregrinans, adorned in bronze orange.

Geranium oxonianum Katherine Adele in pictures

Geranium oxonianum Katherine Adele (Flowering) Flowering
Geranium oxonianum Katherine Adele (Foliage) Foliage

Flowering

Flower colour pink
Flowering time May to September
Flower size 2 cm

Foliage

Foliage persistence Deciduous
Foliage colour medium green

Plant habit

Height at maturity 45 cm
Spread at maturity 80 cm
Growth rate normal

Botanical data

Genus

Geranium

Species

x oxonianum

Cultivar

Katherine Adele

Family

Geraniaceae

Other common names

Oxford Geranium, Hardy Geranium

Origin

Cultivar or hybrid

Product reference905611

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Planting and care

Hybrid very resistant to cold, easy to grow both in shade and in full sun. It grows in any soil, occasionally dry, moist to wet, even very clayey. Prune it in July-August, just after flowering, to regenerate the foliage and promote a new flowering at the end of summer. The hybrid geraniums oxonianum are, for the most part, fertile. They tend to self-seed abundantly. These spontaneous seedlings sometimes give beautiful surprises to curious gardeners.

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Planting period

Recommended planting time February to April, September to November

Intended location

Suitable for Meadow, Rockery, Woodland edge
Type of use Border, Slope
Hardiness Hardy down to -29°C (USDA zone 5) Show map
Ease of cultivation Beginner
Planting density 5 per m2
Exposure Sun, Partial shade, Shade
Soil pH Neutral
Soil type Clayey (heavy), Silty-loamy (rich and light), Stony (poor and well-drained)
Soil moisture Moist soil, well-drained

Care

Pruning instructions Prune it in July-August, just after flowering, to rejuvenate the foliage and promote a new flowering at the end of summer.
Pruning Pruning recommended once a year
Pruning time July
Disease resistance Very good
Overwinter Can be left in the ground
4,8/5
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