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Trees

Picrasma quassioides

quassia

A slender deciduous tree to 8m tall, with pinnate leaves to 40cm long, colouring well in autumn, and sprays of tiny green flowers in early summer, followed by red berries

Synonyms

Picrasma ailanthoides

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Plant nurseries
4 suppliers

Ultimate height

4–8 metres

Time to ultimate height

20–50 years

Ultimate spread

2.5–4 metres

Loam

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

South–facing or East–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: Simaroubaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Picrasma are deciduous trees with rather large, pinnate leaves composed of several pairs of ovate leaflets, with loose clusters of tiny flowers in the leaf axils, followed by small berries
Name status: Correct
Plant range: Temperate Asia

How to grow

Cultivation

Grow in fertile, well-drained soil in full sun or partial shade. Shelter from cold drying winds

Propagation

Propagate by seed sown in containers in a cold frame in autumn

Suggested planting locations and garden types

Cottage and informal garden
City and courtyard gardens
Flower borders and beds

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

Generally disease-free

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