Soil moisture survey (IMAGE) Hun-Ren Ökológiai Kutatóközpont Caption The researchers supposed and could also prove that milkweed changes the microclimate, which was drier in the invaded areas than in the control ones in the same study fragments. However, milkweed can provide shade with cooler microclimates, thereby supporting plant species richness. Credit Photo: Tamás Lakatos Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.