Pests and diseasesHere is an overview of common pests and diseases in nature.Bird FluDo you see (a) sick or dead bird(s) in Zoetermeer? Read what you can do.Blue-green algaeBlue-green algae are mainly found in fresh stagnant water such as ponds but also in swimming pools.Oak Processionary MothThe caterpillars of this moth can be found from April to July on pedunculate oak and sometimes on beech and birch.Elm DiseaseA number of elms in Zoetermeer are affected by Dutch elm disease. These trees are being cut down by the municipality.RatsRats are found wherever people live. Do you see a rat? Report it to the municipality.Water crassulaWater crassula is a fast-growing plant, making it a threat to other aquatic plants and water quality.
