The waterweed requires little care, which is why it is also suitable for inexperienced aquarists and new pond owners. But if left to its own devices, it can spread greatly. Since it rarely roots in water alone, it must also be properly cared for for the sake of other plants.
How do you properly care for waterweed?
Proper care for waterweed includes fertilizing if there is a lack of nutrients, regular thinning and shortening of the stems and removal of clippings. In the pond it is important to fish some of them out in autumn, and in the aquarium there is sufficient light, CO2 and a uniform temperature for optimal growth.
Fertilize only if there is a nutrient deficiency
For its rapid growth, waterweed needs plenty of nutrients, which it gets from the water. It therefore competes with algae for nutrients and successfully prevents algal blooms from occurring.
Waterweed is only fertilized when a nutrient deficiency becomes noticeable with pale colored leaves. Fertilize them in the pond with a liquid aquatic plant fertilizer (€19.00 on Amazon) until the deficiency symptoms disappear again. Daily fertilizer is recommended in the aquarium, as the small dosage prevents over-fertilization.
Use the scissors regularly
Regardless of whether it is planted outside in the pond or in the aquarium, it is extremely rare that waterweed does not grow properly. On the contrary, it grows so luxuriantly that the uncontrolled spread of waterweed has to be combated.
- Thin out stems regularly
- if applicable. shorten greatly
- possible at any time in the aquarium
- outside from June
- Waterplague can multiply from any part
- therefore remove clippings from the water
Tip
If you plant waterweed together with a basket of plants in the pond, you can more easily control its spread or get it out of the water for cutting.
Wintering in the pond
In autumn, the shoots of waterweed usually turn brown and sink into the depths. Fish out most of the plant parts, otherwise they will rot and affect water quality. A part can remain in the water to sprout again in the spring.
Tip
The Argentine waterweed is only partially hardy and needs light even in the winter. If the winter is harsh or the pond is under a blanket of snow for a long time, the plant can die completely. If possible, overwinter a piece of it in the aquarium and replant it in spring.
Additional care in the aquarium
All waterweed plants that live permanently in the aquarium need sufficient light and CO2 as well as a uniform temperature. Make sure the ideal values are given.
- 10-20 mg CO2 per liter
- bright location, alternative plant lighting
- no direct sunlight
- Use floor heating including water flow
