A characteristic feature of floodplains is the network of channels and ditches which drain water from marshy land for agriculture. Drainage artificial ditches represents important elements in intensively managed agricultural lowland landscape. These channels remove water in wet periods but may retain it during dry spells. This linear water habitat, that can be slow-flowing or static, may increase total biodiversity of the floodplain. The reason of ditches system construction was the intensification of agricultural production and discharge of inland waters. Their construction characters are analogical to a stream. On the other hand, all habitats of the observed artificial drainage ditches are under strong pressure of penetrating invasive higher plant taxa and habitats of drainage ditches offer very suitable conditions for alien taxa of vascular plants. There are 50 alien taxa occurred in the tree, shrub and herb layer including invasive, casual, natural neophytes and archeophytes Invasive neophytes occur on all observed sites, in 58% of all habitats within the range extremely low to high occurrence. For the part of them are the drainage ditches suitable migration corridors.