Seasonal5 min read

Green manure and winter cover crops

Grow something good over bare soil and the whole garden benefits. Here's why cover crops are worth their weight.

Created by jflgardens.co.uk

Leaving ground bare over winter lets nutrients wash away and weeds take hold. Cover crops — green manures — hold the soil together, fix goodness and bulk up the bed for free. It's one of the simplest wins in an organic garden.

1

What green manures do

A cover crop grows quickly over bare ground, protecting the soil from erosion and heavy rain, smothering weeds and trapping nutrients that would otherwise drain away. Certain crops like clover and vetch also pull nitrogen from the air into the soil.

2

Pick a crop for your situation

Winter-hardy options like winter rye, field beans, phacelia and crimson clover suit most beds, while a quick-growing green manure can slot in between crops in summer. Choose one that fits your soil and how soon you need the bed back.

3

Sow once the bed is clear

Scatter the seed over cleared, firm soil in late summer or early autumn, rake it in lightly and keep it moist until germination. Within weeks you'll have a green carpet protecting the bed through winter.

4

Dig or chop it back before planting

In late winter or early spring, cut the crop down and dig the green growth into the top of the soil. As it rots it feeds worms and enriches the bed naturally, leaving the ground beautifully ready for spring planting.

Need a hand with this in your own garden?

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