Zanthoxylum piperitum

Japanese Pepper Tree / Sansho

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Deciduous shrub known for aromatic leaves and thorny branches. Produces numbing red seed pods used as spice. Hardy, fast-growing, often cultivated as bonsai or ornamental.
yard Kitchen garden plants wb_sunny Half-shade / Sun pets Not pet-safe
info

Plant Details

Common Name Japanese Pepper Tree / Sansho
Family Rutaceae
Genus Zanthoxylum
Species Piperitum
Origin East Asia
Blooming Small greenish-yellow flowers in spring, followed by red seed pods.
Leaf Color Green, turning yellow/orange in autumn before dropping
Sunlight Half-shade / Sun
Category Kitchen garden plants
Pet Friendly close No
yard

Care & Maintenance

terrain
Soil

Well-draining loamy soil with good aeration and slightly acidic pH

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Watering

Water regularly during active growth, allow soil to dry between waterings. Reduce significantly in winter dormancy.

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Sunlight & Care

Prefers full sun for optimal growth and flavor production indoors or outdoors

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Fertilization

Apply balanced liquid fertilizer monthly from April to September during growing season

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Pruning

Prune in late winter to shape and remove dead or crossing branches before new growth starts

Pest Control Aphid Scale Insect Spider Mite

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 2 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
agriculture Harvesting Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 7 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
50° – 90°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
40% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
1000 – 25000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
1500 – 3400
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
20% – 65%
% volumetric
Water content in the growing medium
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Soil EC
350 – 2000
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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