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Szechuan Pepper

How to identify Szechuan Pepper (Zanthoxylum simulans)

Szechuan Pepper, also known as Sichuan pepper, Flatspine prickly ash, Prickly ash

Szechuan Pepper appears as a vase-shaped, deciduous shrub, typically with a broad, flat-topped crown reaching heights of up to 10-15 feet (3-4.5 meters). The dark green, glossy leaves have a pinnate compound structure, adding to the plant's lush aesthetic. Its bark is mostly smooth, punctuated by prominent broad spines along the branches and prickles on the trunk. In mid-summer, it displays small green flowers, which later give way to eye-catching, dark red berries. The overall form of szechuan Pepper is quite striking due to these vivid characteristics.

Lifespan

Lifespan: Perennial

Plant Type

Plant Type: Tree, Shrub

Leaf Type

Leaf Type: Deciduous

Quickly Identify Szechuan Pepper

1

Vase-shaped deciduous shrub with a broad, flat-topped crown reaching 10-15 feet (3-4.5 meters).

2

Compound leaves with 7-11 lanceolate leaflets, emitting a fragrant aroma when crushed.

3

Dark red berries within fragrant, split-open spheres measuring around 0.2 inches (5mm).

4

Distinctive trunk with smooth bark, broad spines, and aromatic qualities typical of Rutaceae family.

5

Dioecious plant requiring both male and female specimens for fruit production in mid-summer.

Szechuan PepperSzechuan PepperSzechuan PepperSzechuan PepperSzechuan Pepper

Detailed Traits of Szechuan Pepper

Leaf Features

The leaves of szechuan Pepper are compound, consisting of 7 to 11 leaflets arranged on a central stem. Each leaflet is typically 1 to 2 inches (2.5 to 5 cm) long and lanceolate in shape. The leaflets are a vibrant green on the upper surface, with a paler underside. When crushed, the foliage emits a fragrant aroma. The texture is smooth, and the veins are prominently visible, resembling those of ash leaves. The entire compound leaf measures about 3 to 5 inches (7.5 to 12.7 cm) in length.

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Flower Features

The flowers of szechuan Pepper are small, typically 0.2-0.3 inches (5-8 mm) in diameter, and light green in color. They appear in mid-summer and form on separate male and female plants. Each flower features a simple and inconspicuous petal arrangement, usually with five tiny petals. The flowers are not notably fragrant, but their clustered formation and mid-summer bloom period make them distinct. The plants are dioecious, requiring both male and female specimens for fruit production.

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Fruit Features

The fruit of szechuan Pepper presents as fragrant, dark red spheres that gently split open upon maturation to unveil shiny black seeds nestled within. Typically, each globular fruit measures around 0.2 inches (5mm) in diameter. Their textured surface and distinct coloration make them visually striking. After collection, these fruits are commonly dried, whereby they adopt a rich brown hue and become a pepper-like spice, treasured in culinary applications for their distinctive flavor.

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Key Facts About Szechuan Pepper

Attributes of Szechuan Pepper
Spread
3 m to 7 m
Leaf Color
Green
Flower Size
4 mm to 5 mm
Flower Color
Green
Yellow
Fruit Color
Red
Black
Brown
Copper
Burgundy
Stem Color
Green
Red
Leaf type
Deciduous
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Scientific Classification of Szechuan Pepper

Family
Rue
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Species
Szechuan Pepper (Zanthoxylum simulans)
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Distribution Map of Szechuan Pepper

Szechuan Pepper is a plant species native to temperate regions of East Asia. It has since been introduced to other areas for cultivation due to its adaptability. Although primarily found in its indigenous range, szechuan Pepper has expanded beyond, growing in various non-native regions across continents where the climate is suitable for its survival. The plant is recognized for its capability to thrive in a wide range of environmental conditions.
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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