Last season I sowed two different types of green manure as a trail to see which would over winter. I used Hungarian Grazing Rye and Winter Tares. The Rye is neutral in the crop rotation ans is said to harvest minerals in the soil due to its deep and extensive root system. This is the first time Winter Tares has been used in the garden. It is a legume so should fix nitrogen.
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|Grazing Rye||Grazing Rye
The grazing rye performed very well and has come through the long cold spell unscathed. It is starting to put on growth now which is a real sign of its hardiness.
The winter tares did not tolerate the cold winter and has died back as can be seen from the comparison photographs above. There is still a covering on the bed but it is just about finished.
My overall conclusion is that both of these green manures is viable and both will tolerate the cold we get in the garden every year. This is out sixth winter and each year we have recorded at least -10c at 2m above ground. This year the frost was more persistent and the snow heavier.
The centre photograph shows a bed of grazing rye that was cut off, left to wilt for a week and then dug in. Do this a few weeks before sowing seeds as the roots exude a chemical that inhibits seed germination. This bed will be planted with onion sets in mid March.