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Zanthoxylum armatum

Peppercorn Plant

Zanthoxylum armatum, commonly known as Green Peppercorn Plant or Szechuan Pepper, is a deciduous shrub grown for its spicy berries and foliage. At about three years of age, it produces clusters yellow flowers during spring which result in the flavoursome, green berries during summer which age to black when dried. It grows as a thorny, deciduous shrub with open branching to about 4 m tall and 3 m wide, and can easily be contained with trimming. For NZ gardeners, it is an appealing choice for mixed borders, feature planting, and layered garden designs.

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Suited to regions:All regions
Plant type:Shrubs
Height:4.00 m
Spread:3.00 m
Flowering time:Spring
Tolerances:
Garden uses:Culinary
Garden styles:Alpine, Backyard, City & Courtyard, Frontyard, Japanese, Mediterranean, Modern
Easy to grow?Yes
Maintenance requirementsSome
Growth rateMedium
Also known asPeppercorn Plant
Sku17867

How to grow Zanthoxylum armatum in NZ

Grow Zanthoxylum armatum in full sun in a suitable sheltered position, using fertile soil that drains freely. Plant at the same depth as the nursery container, firm the soil gently, and water thoroughly. Add mulch around the roots while keeping it away from the stems. Water consistently during the first growing season and choose a position with room for the mature plant. Check moisture regularly as the new roots settle into their surroundings.

Zanthoxylum armatum care tips

Care for Zanthoxylum armatum by matching moisture and feeding to its growing season. Water deeply during dry weather while the roots are establishing. Apply a suitable fertiliser in spring and refresh the mulch to retain moisture. Remove damaged growth and trim lightly when necessary to maintain a balanced shape. Check new shoots for pests and keep competing weeds away from the root zone. Regular checks help you respond promptly to changing conditions.

Zanthoxylum armatum size, spacing, and growth rate

Zanthoxylum armatum typically reaches about 4 m tall and 3 m wide under suitable conditions. For individual plants, allow about 3 m between centres to give the foliage space without excessive crowding. It has a moderate growth rate under suitable conditions. Final size varies with climate, soil, container size, and maintenance. Allow for the expected spread when positioning plants beside paths, walls, or neighbouring specimens. Check the developing plant regularly and adjust nearby planting as its natural form becomes clearer.

Landscaping uses for Zanthoxylum armatum

Use Zanthoxylum armatum for mixed borders, feature planting, and layered garden designs. Zanthoxylum armatum is commonly grown specifically for the berries, included in a mixed planting, or simply grown as something a little unusual. Position it where its distinctive features can be appreciated and allow the natural habit to guide your design. Combine it with plants that enjoy similar light, soil, and watering conditions for a practical, cohesive display. Repeated planting creates rhythm, while a single specimen provides a clear focal point.

Why buy Zanthoxylum armatum from The Plant Company?

Buy Zanthoxylum armatum from The Plant Company, NZ's most trusted plant nursery. Our range makes it easy to choose plants that suit your garden, home, and local growing conditions. Benefit from practical growing advice, convenient online ordering, and careful packing for delivery throughout New Zealand. Whether you are planning mixed borders or adding to an established collection, our team can help you make a confident choice. Explore the available options and bring your next planting project to life.

Questions and Answers

Have a question about Zanthoxylum armatum (Peppercorn Plant)? We are here to help.

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