Unraveling blanket weed
Here we discuss the benefits of blanket weed in cleaning ponds, the reasons for controlling its growth, and some methods that can be employed for successful management.
By Our Gardens Matter
Blanket weed, also known as filamentous algae, is a common problem in garden ponds. While it serves a purpose in cleaning ponds by absorbing excess nutrients and oxygenating the water, it can quickly become uncontrollable and detrimental to the ecosystem. Therefore, effective control measures are necessary to maintain a balanced and healthy aquatic environment.
Firstly, blanket weed plays a vital role in cleaning ponds. It thrives in nutrient-rich environments, which are often a result of runoff from surrounding areas or the accumulation of debris within the water. Blanket weed absorbs excess nutrients like nitrogen and phosphorus through its filamentous structure. Additionally, the photosynthesis performed by blanket weed aids in oxygenating the water, benefiting aquatic organisms.
However, blanket weed’s rapid growth and spread can become problematic if not controlled. Excessive amounts of this algae can cover the pond surface, restricting sunlight penetration and harming submerged plants. This prevents native species from flourishing, and a dense blanket weed presence can lower oxygen levels. Therefore, it becomes essential to find ways to control its growth.
Various methods can be employed to manage and control blanket weed effectively. One technique is physical removal, which involves manually scooping out as much of the algae as possible. Although labour-intensive, this method proves helpful in reducing the overall biomass of blanket weed. Chemical treatments specifically aimed at killing the algae upon contact are available, but how effective they are is debatable and careful consideration must be given to the environmental impact and potential harm to other pond organisms. Implementing a well-balanced ecosystem, including introducing aquatic plants like veronica beccabunga and hornwort, will help compete with blanket weed for nutrients, ultimately controlling its growth.
In conclusion, while blanket weed assists in cleaning ponds by absorbing excess nutrients and oxygenating the water, it needs to be controlled due to its rapid growth and the potential harm it can cause to the ecosystem. Physical removal and maintaining a well-balanced ecosystem are effective methods for controlling its spread. By implementing these measures you can strike a balance between benefiting from the cleaning properties of blanket weed and ensuring a healthy and thriving aquatic environment for all organisms involved.
