As a result of the field survey carried out in the area of Trzebinia in years 1999-2000, 642 vascular plant species were recorded, many of them represented by: Asteraceae. Fabaceae, Cyperaceae, Rosaceae families. 51 taxa were not confirmed. Among life forms hernicryptophytes predominate. With regard to habitat conditions, there are mostly photophilous species preferring full light with temporary shading and temperate warm and temperate cool temperature conditions, fresn and humid soils with pH ranging from light acid to alkaline, rich in organic compounds. sandy-clay or heavy clay soils. In the flora of the town species of alien origin have huge contribution ( 19.8%). Archaeophytes and among kenophytes - agriophytes, are the most frequent. Despite considerable synanthropization the nora of the town is characterized by a large participation of protected species (40) and endangered ones in the scale of Upper Silesia (84). However, there are not many montane species ( 15). The most precious area in Trzebinia, from floristic point view, is Podbuczyna and the most disturbed - the centre and Chechlo.

The field investigations concerning water and peat bog communities on the territory of Trzebinia in 2000 revealed their little diversity caused by a small number of large water bodies and performed betterment drainages. 12 syntaxa were distinguished which represent 5 classes: Lemnetea minor is (I), Potametea (6), Utricularietea intermedio-minoris (I), Littorelletea uniflorae (I), Scheuchzerio-Caricetea nigrae (I). Among described units 3 plant associations are endangered within Upper Silesia: Myriophylletum verticillati, Hottonietum palustris, Valeriano-Caricetum flavae (montane plant association).