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Red shiso (Perilla frutescens) seed packet front showing Japanese salad herb seeds
Young red shiso seedlings with emerging burgundy-purple leaves
Back of red shiso seed packet with sowing instructions and growing information
Side view of red shiso seed packet packaging
Close-up of red shiso (Perilla frutescens) leaves showing deep purple colour and serrated edges

Red Shiso Seeds

Perilla frutescens var. crispa

Ornamental herb seeds with an indescribable flavour

Likened to basil, people find it hard to define the flavour. Popular in Japan and all over Asia it is a perfect addition to your curated herb garden.

Approx 300 seeds

  • Needs Extra Care
  • Sun Loving
  • Hardy Perennial
  • Grow Your Own

Red Shiso Seeds – Quick Growing Guide

Red Shiso seeds are best sown indoors from March to September to get a head start before transplanting outdoors after the last frost. This distinctive herb thrives in full sun with well-drained soil, making containers or garden beds ideal locations for growth.

How to Sow, Grow and Harvest Red Shiso Seeds

  • Sow:Mar–Sep
  • Germination:7–14 days
  • Grow:Warm, well-drained soil in partial sun
  • Water:Keep soil moist, avoid waterlogging
  • Harvest:Pick leaves regularly once plants are established
  • Best for:Pots, beds, windowsills

Grow in Your Garden

Red Shiso Seeds – A Distinctive Herb for Your Garden

Calendar

Red Shiso Seeds planting calendar: Mar–Sep: Sow • Jul–Oct: Flowers or harvest

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
SowFlowers / Harvest

How to Grow

Red Shiso seeds are best sown indoors from March to September to get a head start before transplanting outdoors after the last frost. This distinctive herb thrives in full sun with well-drained soil, making containers or garden beds ideal locations for growth.

  • Sowing

    Surface sow 2-3 seeds per hole on firm, damp soil and gently pat down. Cover the sown area with a sheet of newspaper and keep it in the shade to encourage germination.

  • Growing

    Once seedlings appear, thin to allow adequate space for growth, especially when grown in containers around 50 cm in size. Harden off the young plants before planting out to ensure they establish well during the July to October growing months.

  • Plant care

    Keep the soil consistently moist during the growing season, watering regularly but avoiding waterlogging. Pinch back the growing tips to encourage bushier growth and prevent legginess, ensuring a robust plant. Regular attention is needed as this perennial herb requires some love to flourish in the garden or containers.

About Red Shiso

A striking and aromatic Asian herb, red shiso (Perilla frutescens) is grown for its deeply coloured purple leaves and distinctive flavour. Popular in Japanese and Korean cooking, it’s ideal for salads, garnishes, pickling, and herbal use. Easy to grow from seed, it thrives in pots or garden beds and adds both colour and flavour to the kitchen garden.

  • Needs Extra Care
  • Sun Loving
  • Hardy Perennial
  • Grow Your Own

Eventual height & spread

0.45m
0.6m
Plant

History of Red Shiso

Historically, Shiso seeds were once used for lamp oil, but today the plant is prized for its culinary and medicinal uses. It’s easy to grow and offers vibrant red leaves that brighten any garden.

Other NamesJapanese or Chinese Basil, Purple Mint

FAQs

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Elsewhere in the range

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26 Aug 2026

Can't go wrong with Cosmos

Lovely packet of seeds, bought one for me and one as gift :)

Gareth