Due to climate change, stormwater management is becoming increasingly important. A wadi is a depression in a street or park where excess rainwater can flow and infiltrate the soil. It is, therefore, a place where water temporarily pools.
Wadis are often combined with other functions in public spaces, such as a playground or a soccer field. They are also constructed on street shoulders and along highways. Road salt and air pollution can therefore be factors to consider when selecting plant species.

Trees in or near wadis must be able to tolerate temporarily wet soil. Wadis fill up when it rains heavily and often empty out again within 72 hours. Therefore, the soil is not continuously wet. There may also be dry periods if there is no precipitation for an extended period of time.

Trees suitable for wadis include Taxodium distichum (bald cypress) and Alnus glutinosa (black alder). Liriodendron tulipifera (tulip tree) and Liquidambar styraciflua are also species that can tolerate temporary waterlogging. Additionally, Quercus palustris, Carpinus betulus, or Alnus incana may be suitable.

Depending on the situation, several types may be suitable. Please contact us for advice by calling 0411-621964.