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Herbaceous Perennial

Geum × intermedium 'Hofrennydd'

avens 'Hofrennydd'

A low-growing, spreading, clump-forming rhizomatous perennial to around 20cm high, with basal rosettes of lobed and toothed green leaves. Semi-drooping, nodding creamy yellow to white flowers with a green calyx covering the tops of the petals are held on stems above the foliage continuously from mid April to mid May. Good for a shady part of the garden

Synonyms

Geum × intermedium Helicopter

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Ultimate height

0.1–0.5 metres

Time to ultimate height

2–5 years

Ultimate spread

0.1–0.5 metres

Chalk

Clay

Loam

Sand

Moisture

Moist but well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full shade
Partial shade

Aspect

East–facing or North–facing or West–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Rosaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Clump forming, Spreading branched
Genus: Geum are rhizomatous perennials, occasionally spreading by stolons, with a basal rosette of pinnately lobed leaves and saucer-shaped flowers in loose clusters
Name status: Unresolved

How to grow

Cultivation

Grow in fertile, moist but well-drained soil in a shady area. Avoid areas that are waterlogged over winter. Divide every three years or so to maintain vigour

Propagation

Propagate by division in autumn or spring

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Wildlife gardens
Flower borders and beds
Underplanting of roses and shrubs

Pruning

Deadhead to promote more blooms, and cut back old stems after flowering

Pests

May be susceptible to leaf miners and geum sawfly

Diseases

May be susceptible to powdery mildews

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