They have analysed the structure and the growth of irregular stands and compared it with even-aged ones. Their research has been carried out in the Poljane forest management unit, on the sites of the Dinaric silver fir-beech forest (Omphalodo-Fagetum). They have evaluated 10 research plots in irregularstands and 10 plots in even-aged stands. In addition they have carried out a stem analysis of totally 225 trees. They came to the conclusion of high level of growing stock; fir and spruce are the dominant tree species in the stands. The vitality of tress was solid and firm. The ages of the waiters , starters and runners do not differ significantly, while the winners are significantly older. The period of suppressed growth was the longest for fir threes. The spruce tree has a more favourable assortment structure in irregular stands. The fir tree is of lower quality compared to the spruce tree. As a general rule, the fir tree culminates the last. A large portion of trees has several culminations of height, radial as well as volume current increments. The felling stimulates the increment of trees, particularly the most dominant ones. They have also determined a greater influence of temperature compared to the precipitation on the ring width.