Fagopyrum dibotrys

RHS Plant Profile

tall buckwheat

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Synonyms

Fagopyrum cymosum

Herbaceous Perennial

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An herbaceous perennial to 1.5m,producing arrow-shaped, light green leaves. From late summer to autumn it bears small white flowers on branched, red flower stalks above the foliage

Position

Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 1-1.5 metres
Max Height: 1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Partial shade

Aspect: East–facing or South–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): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Polygonaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Fagopyrum are a genus of around 16 plants, including two types of edible buckwheat.
Name Status: Correct

How to Grow

Cultivation

Grow in any moderately fertile soil in partial shade

Propagation

Propagate by seed, or division in spring or autumn

Suggested planting locations and garden types

Cottage and informal garden
Low Maintenance
Banks and slopes
Flower borders and beds
Wall side borders

Pruning

Cut back old stems in early spring

Pests

Generally pest-free

Diseases

Generally disease-free