Why Narrow Rows Make All the Difference

Flax is one of the oldest fibre crops in these islands, and the reason it fell out of fashion has nothing to do with the plant and everything to do with labour. Growing it is straightforward. Processing it is where the hours go. Anything you can do at sowing time to make the growing season easier is an investment you will feel later.

Sowing in rows is the single most useful habit to get into. Flax seedlings are fragile, thin as a needle, and hopeless at competing with weeds for the first three or four weeks. Broadcast seed and you cannot tell flax from fat hen without kneeling in the wet. Sow in rows and you can run a hoe or your fingers between the lines with confidence, leaving each plant the room it needs to grow a tall, straight, unbranched stem. That stem length is the whole point: fibre yield is measured in centimetres, and a crowded, weedy patch gives you short, kinked, useless straw.

Choosing and Preparing the Ground

Flax likes a deep, friable loam that holds moisture without sitting wet. Heavy clay is hard work — the seedlings struggle to break through a crusted surface — and very light sand dries out just as the stems are extending. A bed that grew potatoes or beans last year is ideal. Avoid ground that has been heavily manured; rich, nitrogenous soil makes flax grow soft, leafy and prone to lodging, which is exactly what you do not want when you are growing for fibre.

Dig or fork the bed over in autumn if you can, and let the frost break down the clods. By sowing time you want a fine tilth with no lumps bigger than a pea. Rake it level, firm it gently by treading, then rake again. A level bed matters more than it sounds, because seed sown at uneven depth germinates unevenly, and a patchy row is a nightmare to weed.

Spacing, Depth and Seed Rate

Fibre flax is sown densely — closer than most garden crops — because you want tall single stems rather than bushy plants. Seed flax, grown for oil, is spaced wider. For linen, aim for:

• Row spacing: 15–20cm apart, or as close as 10cm if you are sowing in a dedicated fibre block and can weed by hand.
• Depth: 1–1.5cm. Any deeper and germination drops sharply.
• Seed rate: roughly 2 grams per square metre scattered along the rows, or about one seed every 1–2cm.
• Timing: mid-April to mid-May, once the soil has reached around 8°C and the worst frosts have passed.

Draw a shallow drill with the edge of a hoe or a stick, trickle the seed in thinly, then cover and firm with the back of a rake. Keep the bed watered if the spring is dry — flax germinates in seven to fourteen days, and a dry fortnight can halve your stand.

Thinning, Weeding and the First Six Weeks

Once the seedlings are up, they look like tiny green spikes, often with a faint reddish tinge on the stem. This is the moment to be ruthless. Hoe between the rows every week or so, cutting weeds off at the surface while they are still small. Do not thin fibre flax for spacing — the crowding is intentional — but do remove any obvious gaps where weeds have taken hold.

By the time the plants are 20–25cm tall they will shade the ground and the weeding burden drops dramatically. If the stems start to lean or you spot flower buds forming low down, the bed is too rich or too thin; note it for next year.

From Row to Ribbon: Harvesting and Retting for Linen

Fibre flax is ready roughly 100 days after sowing, when the lower leaves have yellowed and dropped and the seed capsules are still slightly green. Pull the stems rather than cutting them — the longest fibre runs from root to tip, and a scythe wastes the best part. Tie them into bundles, stand them upright to dry, then ripen the seed.

Next comes retting, which is simply letting the pectin between the fibre and the woody core rot away. Dew retting on grass works well in a British autumn: lay the stems in thin rows, turn them every few days, and check after a fortnight by seeing whether the fibre slips free from the core. Then break, scutch and hackle the straw until you have soft, silvery ribbons ready for the distaff.

Dyeing the Linen You Grew

Linen takes natural dye beautifully, and there is something quietly satisfying about dyeing yarn spun from your own plot with plants from the same soil. Mordant first with alum — around 10–15 per cent of the fibre weight — and keep the dyebath below a simmer, because linen dislikes sudden heat.

Weld gives a clear, lasting yellow. Madder root, simmered gently for an hour, yields warm brick and terracotta on linen. Woad needs a little more patience but rewards it with a soft, grey-blue that suits handspun thread. Onion skins, walnut hulls and alder cones are all worth a try, and a weak iron dip after dyeing will sadden any colour into something deeper and more muted.

Sow the rows straight, keep them clean, and the rest — the retting, the spinning, the dye pot — becomes a pleasure rather than a chore.