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Weeds

Weeds. There are thousands of weed species in Russia. However, only some of them greatly annoy the gardeners at definite areas. The well-known weeds in the South Urals are following: sow thistle, dandelion, coltsfoot, sheepbine, etc.

Most common and annoying weeds in our gardens belong to the family Compositae: common sow thistle (Sonchus oleraceus), field sow thistle (Sonchus arvensis) [pictures 1, 2], dandelion (Taraxatum officinale) [picture 4, 5, 6], and coltsfoot (Tussilago farfara) [picture 3]. All these plants, especially sow thistles, have long creeping rootstocks. The parts of rootstock, which were cut by spade, can develop into new plants. Moreover, the seeds of these plants have special adaptation for flight, forwarding them for spreading on new areas (pictures 2, 3, 6). To exterminate these weeds is very difficult, it is necessary to dig out all rootstocks in spring, summer, and autumn, to prevent semination.


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Any medal has two sides. Bee-keepers know, that sow thistles, dandelion, and coltsfoot are important sources of nectar and pollen in early spring. Dandelion and coltsfoot are medicinal plants.

Weeds can be foodstuff for insect pest larvae, e.g., wild violets (Viola sp.) [pictures 7, 8].


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Balsam (Impatiens sp.) [pictures 9 and 10] is a plant which was brought as an ornamental one and took roots in South Urals, and now many gardeners do not know how to exterminate it. Mature fruitcase is burst after a single touch or by wind, spreading seeds.

Sheepbine (Convolvulus arvensis) is well known annoying weed [picture below].








 
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