Maintenance Of Wetlands – A Quick Guide | Maintaining Lawns And Gardens

Maintenance Of Wetlands – A Quick Guide | Maintaining Lawns And Gardens

Soon after a wetland is planted, water level control is critical, otherwise the plants could die from too much water, or for that matter from dryness. Even for long term maintenance, by fluctuating the water levels of wetlands, algae, weed invasion and other problems can be reduced.

Make sure that water levels are monitored and controlled, keeping a particular eye out after large storm events, or long dry period. After planting, monitor and control algae problems, and ensure birds and other wild life do not pull out the wetland plants.

Prevent erosion by strategically placing measures to slow water flow on slopes leading down to the waters edge, whilst off course planting plants in these areas is usually the best action. Replace any dead plants with new ones, and ensure the water is kept clear and not murky, while the wetland plants establish.

Using a flocculant like Gypsum can settle the suspended fine sediment. Never let the wetland plants dry out. Remove or kill any non desirable plants or weeds throughout the first year after the wetland has been planted. The best way to do this is by using Round Up Bioactive to spot spray or wick wipe the undesirable plants.

Natural wetlands survive and perform with no intervention from man. If the wetland has been constructed correctly, then after about a year, if the wetland is fully established, it should generally be able to look after itself, provided weeds are not a problem.

Unfortunately with weed pressures of our modern cities, weed control is generally ongoing. Water weeds such as alligator weed can be a major problem, and if these weeds get into a constructed wetland system, it is necessary to undertake adequate weed control measures.

By using emerging species (Baumea, Schoenoplectus etc) harvesting is generally not necessary. Many wetlands which contain emergent plants such as Phragmities that die back each year are harvested for visual reasons, and some believe it is necessary for nutrient stripping reasons, but this is neither proven nor disproven yet. If floating plants are used to soak nutrients, then annual harvesting is essential.

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