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UK Delivery 95p. Free On Orders Over £12.50

Mustard Leaf Seeds - Red Frills

Botanical - Brassica juncea


Seed Count:
200 Seeds
Usually despatched within 24 hours
See "Delivery Charge" tab below
Price £1.50
Discounts applied automatically at checkout.
  • Buy 2 - 3 and pay only £1.38 each
  • Buy 4 or above and pay only £1.25 each

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200 Seeds.

Other Names - Oriental Mustard, Leaf Mustard, Oriental Leaves...

Red Frills is one of the most attractive leaves to grow in the garden over the cooler months be it the vegetable or flower garden. Its beautiful frilly serrated green leaves turn a dark purple colour as the winter temperatures drop. Leaves can be harvested as a cut and come again producing a large crop of excellent quality fresh leaves over a long season. For a mild sweet mustard flavoured leaf harvest when young and small. A superb addition to salads, sandwiches, stir-fries or sprinkled on top of pizzas.

  • Produces a frilly pretty green and dark purple leaf.
  • Very easy to grow.
  • Hardy and suitable for container growing.

Suitable For - Vegetable plot, raised beds, container garden, limited space

Sowing Months - July - September

Harvest - October - April

Gardening is about finding the right balance! Try growing Companion Plants close by to help deter pests.

  • Amaranth is a great plant for attracting the ground beetle. This predatory beetle eats slugs, snails, slug and snail eggs, caterpillars and weed seed.
  • Cabbage white butterflies are drawn to nasturtiums. Try growing these flowers close by as a sacrificial plant.
  • Mint helps to deter the flea beetle however it is advisable to grow this perennial herb in containers as mint is very invasive. The containers can be arranged around vulnerable crops as and when needed.
  • Calendula (Pot marigold) attracts predatory insects such as lacewings, ladybirds and hoverflies who love to feast on aphids.

Soil Preperation

The soil needs to be free draining but water retentive. Add some well rotted manure or compost to the bed a few months before sowing or planting. Remove any weeds and slug havens such as stones, rubbish, wood etc. from the area.

General InformationSowing & Planting Information
Habit Annual Module Grown & Transplants
Type N/A Distance between plants 20 cm
Position Partial shade, cool location Distance between rows 30 cm
Average height 20 cm Direct Sowing
Average spread 25 cm Sowing distance between plants 20 cm
Hardiness Hardy Distance between rows 30 cm
Overwintering Undercover Sowing depth 0.5 cm - 1 cm
Soil Ph 6.5 - 7.5 (prefers alkaline soil) Germination temperature 8 to 20℃
    Days to germination 7 - 14 days

Sowing Guide

Early Sowing/Module Sowing

Sow 3 - 4 seeds per 4 cm module. As soon as the seeds start to germinate move to an area with good daylight, a windowsill or greenhouse is ideal. When the seedlings are big enough to handle thin to 2 - 3 seedlings per module. Keep the compost moist but do not overwater. 1 - 2 weeks later, depending on speed of growth plant out into their final growing position.
Harden off over a few days so the plants become acclimatised to the outdoors. Plant out at the distance suggested above. Firm the soil around each plant and water well.

Direct Sowing

Young seedlings are especially vulnerable to slug attack. Ensure the area is free of possible slug havens such as weeds, stones etc. When watering keep the surrounding soil as dry as possible especially when the seedlings are young to help ward off slugs and snails as they do not like dry soils. Sow 3 - 4 seeds every 20 cm at the depth and row distance suggested above. Cover the seeds with soil and water well. When the seedlings are big enough to handle thin to 2 - 3 seedlings per station.

Growing On

Weed regularly to keep competing plants and slug havens under control. Water well during dry weather. Mustard are hardy plants and can be grown outdoors unprotected over the winter months, however protected plants will produce better quality leaves. Ideally cover outdoor grown mustard with a cloche or horticultural fleece over the colder months. Container grown mustards can easily be moved into a greenhouse to overwinter. Remove any damaged, rotting or yellowing leaves over the season.


Mustard leaves are best picked when small, eaten raw in a spicy salad or sprinkled on top of a pizza. Larger leaves however can also be enjoyed cooked in stir fries etc. Pick the larger outer leaves first, leaving the smaller leaves in the middle to grow some more for the next harvest. Regular pickings will encourage the plants to produce more leaves. From an autumn sowing a good amount of leaves can be harvested up until the end of the year.
Harvests in January and February should be kept to a minimal unless growth is vigorous. However in March the plants should start to grow strong again, producing an abundance of young tender leaves again up until the end of April when the plants will naturally run to seed.


If mild mustard flavoured leaves are preferred keep the plants small by harvesting the leaves regularly.

Delivery Information

All products on this website are for delivery to the UK only.

(Including Northern Ireland, the Highlands & Islands, Scilly Isles, Channel Isles and the Isle of Man). Delivery charges to these areas are the same as UK mainland stated below (with no additional surcharge). Delivery however may take longer than the times stated due to weather, distance etc.)

FREE DELIVERY on all orders over £9.98

When applicable, free 2nd class delivery will be automatically calculated at checkout.

STANDARD DELIVERY - Royal Mail 2nd Class (3 - 5 working days) - £0.95

For orders under £9.98, the "Standard Delivery" charge will be added automatically at checkout.

FAST DELIVERY - Royal Mail 1st Class (1 - 2 working days) - £1.52

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The 14 day cooling off period.

Under the 'Consumer Contract Regulation Act' you the consumer have the right to cancel a long distance order (such as a website order) at any time from the moment the order is placed up until 14 calendar days from the day after the goods are received.

So if for whatever reason you change your mind within this time and wish to return the goods, simply send us a 'Cancelation Form' (full details can be found on our Your Right to Cancel page). On receiving the undamaged goods back from you we will fully reimburse you with all payments received including the cost of standard delivery. You will however need to bear the cost of returning the goods back to us.

For full details please visit our Your Right to Cancel page.

Damaged, Incorrect or Missing Goods.

We want you to be 100% delighted with your purchase.

If however you receive goods that have been damaged, incorrect or missing, let us know within 72 hours of receiving the goods and we will either fully refund you (including postage costs), promptly send you a replacement or credit your Groseeds account, depending on your preference.

For full details, including how to contact us, please visit our Returns & Refunds page.

Faulty Goods.

We guarantee to supply you with the finest quality seeds in prime condition.

All products sold by Groseeds come with a 365 Days 100% Satisfaction Guarantee (from the date of purchase). For further information please visit our 12 Month Guarantee page.

If however within the 12 months you find the goods to be faulty please contact us ASAP so that we can resolve the issue promptly. Full instructions, including how to contact us can be found on our Returns & Refunds page.

We want you to be 100% satisfied with your purchase. Any issues will be dealt with promptly, courteously and efficiently.