To determine whether the spider communities in spruce Picea abies plantations in southern Sweden differ between trees of various ages, the spiders from minor, young and older trees has been collected during May and June 2016. The minor trees were 1.5–2.0 m, the young trees were 19–20 m and the older trees were over 22 m high. The spiders were collected from five plantations of each age category and from ten trees in each plantation. The spiders from ten of the dead branches inside of each older plantation were collected as well. 59 different species were found and all together 970 spider specimens were collected. The results showed many different things, for example that the species on the dead branches were mainly web spiders and that many of the species on the minor trees prefer the field layer as habitat. My study was compared to three other spider studies, one from Sweden, one from the Czech Republic and one from Norway. The comparison showed differences in the collected spider species which could be explained by the various methods used in the different studies and whether the spiders in the study had been collected during early summer or throughout the whole season. The spiders collected in this study could in the future be used to detect changes in the spider fauna caused by climate change.