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Herbaceous Perennial

Begonia grandis subsp. holostyla 'Nanjiang Silver'

hardy begonia 'Nanjiang Silver'

A tuberous perennial, about 45cm high, with asymmetric, crinkled green leaves with silver spotting (more prominent on new spring leaves) finely toothed edges and pinkish-red undersides. Loose, hanging sprays of pale pink flowers are borne on long, reddish stems in late summer

Synonyms

Begonia grandis silver-spotted

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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

Loam

Sand

Moisture

Well–drained

pH

Acid, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Partial shade

Aspect

East–facing or North–facing or West–facing

Exposure

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: Begoniaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Begonia can be annuals, evergreen or deciduous perennials or shrubs, with fibrous, tuberous or rhizomatous roots and usually asymmetrical leaves, often strikingly patterned, and small or large flowers, both male and female in the same cluster
Name status: Unresolved

How to grow

Cultivation

Thrives in fertile, humus-rich, well-drained neutral to acid soil, in dappled or afternoon shade. May need winter protection in colder regions, and can be slow to start in spring. Will not tolerate waterlogging. See begonias: outdoors for further information

Propagation

Propagate by basal softwood cuttings in spring, or by seed; plants will often self-seed, dropping tiny bulblets from the stems in late summer

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Rock garden
Flower borders and beds
Garden edging
Wall side borders

Pruning

No pruning required

Pests

May be susceptible to caterpillars, mealybugs, mites, thrips, vine weevil and aphids

Diseases

May be susceptible to grey moulds (botrytis), powdery mildews and stem rot

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