Colloquial term (also weeds) for various plants that occur as spontaneous accompanying vegetation within a crop such as a vineyard. They are not deliberately cultivated, but arise from the seed potential of the soil or via seed dispersal. The criterion for "weeds" is that such plants enter into unwanted competition with a deliberately cultivated crop in terms of nutrients, water and light. From a natural point of view, there is no such thing as a weed, even a vine in a rose bed or a rose in a vegetable patch can be undesirable.
Common weeds in vineyards include field mustard, field bindweed, amaranth, thistle, common couch grass, common groundsel, shepherd's purse, burdock, knotweed, dandelion, arrow cress, black nightshade, chickweed and willowherb. However, these plants can also appear as medicinal herbs or indicator plants. The presence of the latter gives an indication of soil type and composition. These are, for example, sorrel (acidic soil), black nightshade (humus-rich, loose soil) and chickweed (good nitrogen supply).
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Roman Horvath MW
Domäne Wachau (Wachau)