Growing Winter Wheat in Raised Beds

Why Winter Wheat Suits a Raised Bed

Winter wheat is usually thought of as a field crop, something grown in broad acres and harvested by combine. But there is no reason a decent raised bed cannot produce a respectable crop of grain, and doing so is one of the most satisfying projects a home grower can take on. Autumn-sown wheat establishes while the soil is still warm, roots deeply through the winter, and then races away in spring before many of our summer weeds have found their feet.

Raised beds give wheat two things it values enormously: drainage and control. Wheat hates standing wet, and a bed lifted 25–30cm above the surrounding ground sheds excess rain beautifully. You also get to choose the soil, set the spacing, and net the seedlings against the pigeons — all much harder in an open patch. And because you are growing on a small scale, you can pick a heritage variety for flavour and character rather than yield alone.

Choosing a Variety That Will Stand Up

The old British wheats — the ones our great-grandparents baked with — are ideal for a bed, provided you choose sensibly. Red Lammas, Squareheads Master, Chidham White and Maris Widgeon are all worth seeking out from heritage seed suppliers, and each has a distinct baking character, from biscuity and soft to nutty and strong.

Bear two things in mind:

• Height and lodging. Heritage wheats are tall, often 1.2–1.5 metres. In an exposed, windy garden they can go flat. Plant them against a fence or hedge, or run a few stout strings between canes at knee and waist height.
• Winter type, not spring. Winter wheat needs a spell of cold to trigger flowering — a process called vernalisation. Spring-sown types will run to seed without it, so check the packet carefully.

Shorter modern varieties are less likely to fall over, so if your site is blustery, a semi-dwarf type may be the wiser choice for a first attempt.

Building the Bed and Getting the Soil Right

Keep the bed to about 1.2 metres wide so you can reach the middle from either side without treading on the crop. Fill it with a loam-based mix: roughly two parts good topsoil, one part well-rotted compost, and a handful of horticultural grit per barrowload to keep it open. A pH between 6.5 and 7.5 suits wheat well, so test and adjust with lime if your soil is sour.

Resist the temptation to enrich the bed heavily. Too much nitrogen in autumn produces soft, sappy growth that slugs, aphids and frost all punish. A modest, balanced start is far better, with the main feed held back for spring. If your bed sits on open ground rather than a hard surface, leave the base unsealed so worms and deep roots can move freely.

Sowing at the Right Time and Depth

In most of the UK, late October to mid-November is the sweet spot. Sow earlier and you risk lush growth before the cold arrives; sow much later and the plants go into winter with too little root to survive.

Draw drills about 3cm deep and 15cm apart, then trickle seed along them at roughly 18–20g per square metre — about 200 seeds. Thin sowing looks wasteful, but thick stands crowd, lodge and mildewand. Cover the seed, then firm the whole bed by treading it gently or rolling it with a length of drainpipe. Good seed-to-soil contact is what gets germination going. Label the bed with variety and date; you will not remember in March.

Protecting Seedlings from Birds and Weather

Pigeons and sparrows can strip a bed of wheat seedlings in a morning, pulling up the young plants to get at the grain. Netting is the only reliable answer. Drape it 15–20cm above the soil on hoops or canes, and check it after gales — a collapsed net does more harm than none. Bird-scarers and CDs work for a day or two at best.

While you are out there, watch for slugs and leatherjackets, and check that autumn rain is not pooling in the bed. Winter frosts can lift seedlings out of the ground, a problem known as frost heave; a gentle press with the back of a rake after a hard spell settles them back in.

Through Winter, Spring and Harvest

Winter is mostly a matter of watching. The crop should sit small and green, growing roots rather than leaves. In March, when growth restarts, give a light top dressing of a balanced organic fertiliser and hand-weed between the rows — wheat competes poorly with chickweed and groundsel in a small bed.

By July the straw will turn from grey-green to gold and the ears will nod. Test a grain between your teeth: if it is hard and crunchy rather than doughy, it is ready. Cut the stems, tie them into sheaves and stand them somewhere dry and airy for a fortnight, then thresh by rubbing the ears between your hands or beating them inside a pillowcase. Expect roughly 300–500g of grain per square metre in a good year — enough, from a generous bed, for a couple of loaves of your own bread. That first flour, stone-ground or simply milled at home, tastes like very little else.