Zanthoxylum simulans at Roath Park Botanic Garden

Zanthoxylum simulans 0

Zanthoxylum simulans foreground, Eucalyptus behind
early May 2017

Zanthoxylum simulans 1

Zanthoxylum simulans foreground, Eucalyptus behind
early November 2017

Grid reference ST 18467 79165
Common name Chinese prickly-ash
Common name Szechuan pepper
Origin China and Japan
Deciduous Yes
Planted 1980s
Height 5.5M May 2017
Girth 42cm May 2017
Reference 520
Tree died Winter 2018/19

This is the last of three trees of this type planted in close proximity on the west side of the Botanic Garden, just south of the toilet building. A multi-stemmed Eucalyptus is growing immediately behind it.

In November 2017 fruit was about 5.5mm diameter and roughly sperical. Inside was a single black pip with a grey coating. Once opened, the fruit had a fairly strong disctinctive odour.

Zanthoxylum simulans bark1

Zanthoxylum simulans bark
May 2017

Zanthoxylum simulans bark2

Zanthoxylum simulans bark
May 2017

Zanthoxylum simulans leaf

Zanthoxylum simulans leaves
early May 2017

Zanthoxylum simulans flower

Zanthoxylum simulans flowers
late May 2017

Zanthoxylum simulans fruit

Zanthoxylum simulans fruit
early November 2017

General tree description

Zanthoxylum simulans is a small tree with a spreading form and spiny branches, particularly notable for the stout prickles on its trunk. It has small, greenish-yellow, cup-shaped flowers in early summer, followed by small rounded reddish fruits. The leaves are pinnate, consisting of 7 to 11 broadly oblong, saw-toothed, glossy, dark-green leaflets which turn yellow to reddish yellow in autumn.