How to grow Perilla plant

Perilla plant grow and care – herbaceous‎ of the genus Perilla, and also known as Shiso, Perilla annual plant used for the edible leaves and also as ornamental plant, leaves can be colorful, grow in temperate climate and growing in hardiness zone 3-10 and with the right care in hardiness zone 11.

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Perilla plant edible leaves

Leaves edible are in deltoid shape with serrated edges, the color can be green or purple, can be also in the upper side green and down purple.

Flowers small that grow on stalk in inflorescence, the inflorescence can be green or purple

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How to grow Perilla plant growing and care:

Slightly acid soil, prefer rich soil with organic material

How to care:
Fertilizer once a year after the plant arrive to 7-10 leaves, fertilizer should be for growth and not for blooming

What is the best way to start growing?
Plant / Seedling / Seed / Cutting

Is it necessary to graft or use vegetative reproduction?
No, the plant reseed itself and it is possible to start by cutting but the plant annual and it need to be sowing indoor in the winter and start the cutting in the beginning of the spring and planting 2 weeks after outdoor after the last frost

Difficulties or problems when growing:
Sensitive to high temperature

Planting season:
Spring in hardiness zone 3-10a, mid of winter 10b-11

How to plant:
Better to start from seeds or young plants and not to start by plant, transplanting mature plant not always have success rate, important to add enough water the first days especially if in the spring season have a lot of heat wave also add mulch to cover the soil.

Pests and diseases:
Aphids, larva

Pruning season:
Autumn mostly but can be all the season

How to prune:
No need to prune, unless using the leaves or design

Size of the plant?
0.5-1.2 m, 20-48 inches

Growth speed in optimal condition:
Fast growing / Medium growing

Water requirement:
Average amount of water / Big amount of water in hotter location the plant will need more water

Light conditions in optimal condition for growing:
Full Sun / Half Shade to delay the bloom better to grow in half shade but in location with not too much hot summer need to be in full sun and in hardiness zone 10b-11 better in half shade

Is it possible to grow indoor as houseplant?
No

Growing is also possible in a pot, planter, flowerpot or containers:
Yes, when grow in container, size 5-12 liter (1.5-3 gallon) amount of water that needed, it’s to keep the soil moist and the water go out of the pot, better not to use bottom of pot, when it’s grow as perianal every two years to switch soil in the pot don’t let, soil need to be well ventilated with good drainage, rich with organic matter, can us in potting mix or peat soil with perlite or vermiculite.

Blooming information

Bloom season:
Summer / Autumn

General information about the flower
Small flower that grow on stalk in inflorescence, the inflorescence can be green or purple

Thinning the bloom:
If not using the seeds recommend to thinning

Pollination is done by:
Bees, fly

Edible leaves

Leaves harvesting season:
Spring / Summer / Autumn (when the plant start bloom better to prune the flowers)

How to harvest the leaves?
Recommend to trim the with the branch

Information about leaves:
Serrated edges, the color can be green or purple, can be also in the upper side green and down purple, the leaves become bitter in hardiness zone 10b-11 in the summer especially when the temperature high

Uses of Perilla plant leaves:
Cooked, stir fry, quiche, salad

How to grow Perilla plant from seeds

Sowing requirement:
Short life seeds, need to soaked on water for 12-24 hours, temperature 15-20C (59-68F) possible colder temperature even 10C (50F), sunny location, moist soil and humidity

Saving seeds until sowing:
Cold, dry and dark place

Sowing season:
Spring after the frost and in hardiness zone 10b-11 in the mid-winter

How to plant:
Light soil, better to use vermiculite to keep the soil moist (when use vermiculite just small layer and under it soil with nutrient

Planting spacing:
30*30 cm (12*12 inches)

Depth of Sowing:
1-1.5 cm (0.5-0.7 inch)

Conditions for seeds germinate:
Moist, full sun in hardiness zone

Watering requires for Seeds:
Average amount of water

Germination time:
7-30 days

Condition of seedling:
Moist soil, full sun (in heat wave add mulch around the plant

Do the seeds require burying?
No, but better to save the seeds in cold place

Scientific name:

Perilla frutescens

How to grow Perilla plant

Perilla plant leaves

Growing Perilla plant

Perilla plant care

Perilla plant

Categories

Blooming Seasons
  • Autumn flowers
  • Summer flowers
Edible Parts
  • Edible leaves
Culinary uses
  • Cooked
  • Eaten raw
  • Salad
Flower colors
  • Green flower
  • Purple flower
Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Temperate Climate
Harvest Season
  • Autumn Harvest
  • Spring Harvest
  • Summer Harvest
Leaf color
  • Purple leaf
Ornamental parts
  • Ornamental leaves
  • Ornamental plant
Plant growing speed
  • Average growing plants
Plant life-form
  • Annual plant
  • Herbaceous
Plant Uses
  • Colored leaves
  • Edible plants
  • Ornamental plants
Planting Season
  • Spring Planting
Plants sun exposure
  • Full sun Plants
  • Part shade Plants
Watering plants
  • Big amount of water
  • Regularly water
Hardiness zone
  • Hardiness zone 10
  • Hardiness zone 11
  • Hardiness zone 3
  • Hardiness zone 4
  • Hardiness zone 5
  • Hardiness zone 6
  • Hardiness zone 7
  • Hardiness zone 8
  • Hardiness zone 9

Growing in Pots, Balconies & Indoors

Perilla (shiso) is not a houseplant – the grower marks it unsuitable for deep-indoor growing – but it is an excellent container plant for a patio or balcony, and the grower gives a full potting recipe below. Indoors, only a very bright, sunny windowsill will keep it stocky and flavourful.

Quick Details

  • Container Size: 5-12 L (1.5-3 gal), per the grower
  • Indoor Suitability: Not a room houseplant; grow on a sunny sill for a supply of leaves
  • Best Spot: Full sun, or light shade in very hot regions to delay bolting
  • Soil & Drainage: Well-ventilated, free-draining mix rich in organic matter (potting mix or peat with perlite/vermiculite)
  • Watering in Pots: Keep the soil moist so water runs out the base; the grower advises against leaving it standing in a saucer

Indoors & On the Windowsill

  • Houseplant limits: It won’t do well deep in a room – the light is too weak to keep it compact.
  • Windowsill growing: A sunny sill with direct light gives the best leaf colour and aroma; harvest tips regularly to keep it bushy.
  • Season: Grown as a warm-season annual – start fresh plants each year rather than trying to overwinter old ones.

On a Balcony or Patio

  • Light & wind: Give it the sunniest, warmest spot; in the hottest regions light afternoon shade delays flowering and keeps leaves tender. Walls reflect heat, so pots dry fast – check daily in warm weather.
  • Practicalities: Compact and light, easy to keep by the kitchen door for cut-and-come-again leaves.

Choosing the Pot, Soil & Long-Term Care

  • Pot & drainage: A 5-12 L pot (the grower’s size) with strong drainage holes; skip a standing-water saucer to avoid root rot. Terracotta breathes and dries faster; glazed or plastic holds moisture longer.
  • Potting mix: A light, aerated, organic-rich mix – potting compost or peat/coir with added perlite or vermiculite for drainage. The grower uses potting mix or peat soil with perlite or vermiculite.
  • Feeding: Nutrients wash out of pots faster than open ground, so feed potted perilla more often – a balanced liquid feed through the active growing season.
  • Repotting: As the grower advises, renew the soil every couple of years (you can swap out just part of it) so it does not go stale; pot up when roots fill the container and trim roots and top growth lightly at the same time.

Bloom & Edible Flower Guide

Quick Details

  • Bloom Season: Summer into autumn
  • Time to First Bloom: In its first year — perilla is an annual and flowers as the days shorten
  • Flower Appearance: Small flowers strung along slender spikes; the spike can be green or purple
  • Edibility: Edible — the tender flowering spikes (hojiso) are used as a garnish in Japanese cooking

Detailed Blooming Overview

Perilla, or shiso (Perilla frutescens), flowers from summer into autumn, sending up slender spikes lined with tiny blooms in green or purple to match the leaf colour. In the kitchen these young flowering spikes are prized in their own right — picked just as the buds open, they are used as a delicate garnish.

Flower Characteristics

  • Small flowers borne in a row along a slim upright spike (inflorescence).
  • The spike may be green or purple, following the plant’s leaf colour.

Bloom Care & Thinning

  • Managing the bloom: If you want to keep cutting leaves, pinch out the flower spikes as they form to hold off seeding — or harvest them young as hojiso. Leave a few to flower on if you want to save seed.
  • Pollination: Worked by bees and flies.