plant with green leaves and deep purple vains pictured rom above

Seeds of Scotland

Mustard Green - Hyakka

£2.50

Packet size: ~300 seeds ~300 seeds

GROWN IN SCOTLAND by Seeds of Scotland

Brassica juncea

Originally from Japan, 'Hyakka' has deeply-veined, downward-curling leaves which have a pungent taste like a slightly sweet version of wasabi. These beautiful purple-green leaves are perfect for spicing up salads when young and fresh, and as they grow larger they are a great addition to soups and stir fries.

A versatile fast-growing crop which is well suited to direct sowing and overwintering.

Growing Info

Sowing: Direct sow from March and successionally throughout the year until August/September. Alternatively, sow into modules.

Spacing: 15cm

Harvest: May-Feb. Small leaves should be ready to harvest in 30/40 days.

Tips: Cover young plants in insect mesh to protect from flea beetle (spring/summer). August/September sowings can be transplanted undercover to provide a crop throughout the winter. Early and late sowings do particularly well as summer-sown crops may bolt due to hot and dry conditions.

Germination: 95% June 2026

Resources

For more information about growing and saving seeds check out the Grow North Growing Guide a fantastic resource produced by Transition Black Isle specifically for growers in the North of Scotland.

Postage

All seeds are posted via Royal Mail 48-hour tracked service. Prices will be calculated at checkout. Due to our Highland location, postage can be expensive, so we recommend ordering several seed packets at once to make the most of the cost.

*Please note, due to legislation covering the inspection and sale of seeds, we can only post orders to Scotland, England and Wales.

Packet size: ~300 seeds ~300 seeds

What our customers say

Your seeds are just great! Always excellent germination rates. This is the second year we have had your Robinson peas which are really lovely and grow so well.

Lisa, Bridge of Allan

I thought you should know that your seeds have been wonderful. In an otherwise rubbish growing season, everything I bought from you has thrived. I’ve been eating purple mangetout and Carter’s Polish beans for weeks now and they’re still going strong.

Laura, North Kessock

Desert Spirit Landrace did exceptionally well in my polycrub here in the Western Isles - I even won the pumpkin growing competition that we put up for local growers and allotment holders.

Susanne, Isle of Lewis

I want to thank you for my Garden of Abundance. I’m a new gardener to Scotland and your seeds have given me such joy. I can hardly keep up with eating the rocket and I’ve planted my 2nd set of lettuce already.

Gay, Moray

My Black Isle broad beans are germinating after four days. How is that possible? ! Fab seed!

Janey, Highlands

I wanted to pass on the great success all of the seeds I bought from you have been.
Greatest success was ripe tomatoes (Scotland Yellow) on 7th of July - in Orkney!! Over two weeks later and none of my other varieties are even close to ripe.

Jenna, Orkney